Soil quality - Leaching procedures for subsequent chemical and ecotoxicological testing of soil and soil-like materials - Part 3: Up-flow percolation test (ISO 21268-3:2019)

This Standard specifies a test, which is aimed at determining the leaching behaviour of inorganic and organic substances from a soil and soil-like materials. The method is a once-through up-flow percolation test under standardized conditions of flow rate. The material is leached under dynamic hydraulic conditions. The document has been developed to measure the release of inorganic and organic substances from soil and soil-like material as well as to produce eluates for subsequent ecotoxicological testing. For ecotoxicological testing, see ISO 15799[6] and ISO 17616[7]. The test results enable the distinction between different release patterns, for instance wash-out and release under the influence of interaction with the matrix, when approaching local equilibrium between material and leachant. This test method produces eluates, which can subsequently be characterized by physical, chemical and ecotoxicological methods in accordance with existing standard methods. The results of eluate analysis are presented as a function of the liquid/solid (L/S) ratio. The test is not suitable for substances that are volatile under ambient conditions.

Bodenbeschaffenheit - Elutionsverfahren für die anschließende chemische und ökotoxikologische Untersuchung von Boden und von Bodenmaterialien - Teil 3: Perkolationstest im Aufwärtsstrom (ISO 21268-3:2019)

Dieses Dokument legt eine Prüfung fest, deren Ziel die Bestimmung des Elutionsverhaltens von anorganischen und organischen Substanzen aus Boden und bodenähnlichen Materialien ist. Bei dem Verfahren handelt es sich um eine Perkolationsprüfung mit einmaligem Durchlaufen im Aufwärtsstrom unter standardisierten Bedingungen der Fließgeschwindigkeit. Das Material wird unter hydraulisch dynamischen Bedingungen ausgelaugt. Dieses Dokument wurde erstellt, um die Freisetzung anorganischer und organischer Bestandteile aus Boden und bodenähnlichem Material zu untersuchen und um Eluate für nachfolgende ökotoxikologische Untersuchungen herzustellen. Hinsichtlich der ökotoxikologischen Untersuchungen siehe ISO 15799 [6] und ISO 17616 [7]. Die Prüfergebnisse ermöglichen die Unterscheidung zwischen verschiedenen Freisetzungs¬mustern, wie z. B. Auswaschung und Freisetzung unter Einfluss einer Wechselwirkung mit der Matrix, wenn das lokale Gleichgewicht zwischen Material und Elutionsmittel annähernd erreicht ist.
Durch das vorliegende Prüfverfahren werden Eluate hergestellt, die anschließend mit physikalischen, chemischen und ökotoxikologischen Verfahren nach bestehenden Standardverfahren charakterisiert werden können. Die Ergebnisse der Eluatanalyse werden als Funktion des Flüssigkeits /Feststoffverhältnisses (L/S) dargestellt. Die Prüfung ist nicht geeignet für Substanzen, die unter Umgebungsbedingungen flüchtig sind.
ANMERKUNG 1   Zu den flüchtigen organischen Substanzen gehören niedermolekulare Substanzen in Mischungen wie z. B. Mineralöl.
ANMERKUNG 2   Es ist nicht immer möglich, die Prüfbedingungen gleichzeitig für anorganische und organische Substanzen zu optimieren, und die optimalen Prüfbedingungen können sich auch für unterschiedliche Gruppen von organischen Substanzen unterscheiden. Die Prüfanforderungen für organische Substanzen sind im Allgemeinen strenger als für anorganische Substanzen. Die Prüfbedingungen, die für die Messung der Freisetzung von organischen Substanzen geeignet sind, sind im Allgemeinen auch auf anorganische Substanzen anwendbar.
ANMERKUNG 3   Innerhalb der Kategorie organischer Substanzen besteht ein deutlicher Verhaltensunterschied zwischen den mehr polaren, relativ wasserlöslichen Verbindungen und den nichtpolaren, hydrophoben organischen Substanzen (en: hydrophobic organic substances, HOCs). Im letzteren Fall können die Freisetzungsmechanismen (z. B. teilchengebundene oder gelöste organische Kohlenstoffverbindungen) sowie die Sorptionsverluste löslicher HOCs bei unterschiedlichen Materialien, mit denen sie in Kontakt kommen (z. B. Flaschen, Filter), von entscheidenderer Bedeutung sein. Die Prüfung und die Ergebnisse sollten nur unter sorgfältiger Berücksichtigung der spezifischen Eigenschaften der zu betrachtenden Substanzen und damit verbundenen möglichen Probleme zur Elution organischer Substanzen angewendet werden.
ANMERKUNG 4   Für ökotoxikologische Untersuchungen sind Eluate erforderlich, die die Freisetzung sowohl von anorganischen als auch von organischen Substanzen widerspiegeln. Im vorliegenden Dokument umfasst die ökotoxikologische Untersuchung auch die genotoxikologische Untersuchung.

Qualité du sol - Modes opératoires de lixiviation en vue d'essais chimiques et écotoxicologiques ultérieurs des sols et matériaux du sol - Partie 3: Essai de percolation à écoulement ascendant (ISO 21268-3:2019)

Le présent document spécifie un essai destiné à déterminer le comportement à la lixiviation de substances inorganiques et organiques issues de sols et de matériaux analogues au sol. La méthode est un essai de percolation à écoulement ascendant mené dans des conditions de débit normalisées. Le matériau est lixivié dans des conditions hydrauliques dynamiques. Le présent document a été conçu pour étudier le relargage de substances organiques et inorganiques à partir du sol et des matériaux analogues au sol et produire des éluats destinés aux essais écotoxicologiques. Pour en savoir plus sur les essais écotoxicologiques, voir l'ISO 15799[6] et l'ISO 17616.[7] Les résultats de l'essai permettent de faire la distinction entre différents types de relargage, tels que le lessivage ou le relargage sous l'effet de l'interaction avec la matrice, à l'approche de l'équilibre local entre le matériau et le lixiviant.
Cette méthode d'essai produit des éluats qui peuvent ensuite être caractérisés par des méthodes physiques, chimiques et écotoxicologiques selon des méthodes normalisées existantes. Les résultats de l'analyse des éluats sont présentés en fonction du rapport liquide/solide (L/S). L'essai n'est pas adapté aux substances qui sont volatiles dans des conditions ambiantes.
NOTE 1 Les substances organiques volatiles comprennent les substances à faible masse moléculaire contenues dans des mélanges tels que les huiles minérales.
NOTE 2 Il n'est pas toujours possible d'optimiser les conditions d'essai à la fois pour les substances organiques et les substances inorganiques. Les conditions d'essai optimales peuvent également varier entre les différents groupes de substances organiques. Les exigences d'essai pour les substances organiques sont généralement plus strictes que celles applicables aux substances inorganiques. En règle générale, les conditions d'essai appropriées à la mesure du relargage des substances organiques s'appliquent également aux substances inorganiques.
NOTE 3 Au sein de la catégorie des substances organiques, une différence de comportement notable existe entre les composés les plus polaires, relativement solubles dans l'eau et les composés organiques hydrophobes (COH), apolaires. Concernant ces derniers, les mécanismes de relargage (par exemple liés à des particules ou liés au carbone organique dissous) peuvent avoir plus d'importance, de même que les pertes dues à la sorption de COH solubles sur différents matériaux avec lesquels ils entrent en contact (par exemple flacons, filtres). Il convient d'utiliser les essais et les résultats pour la lixiviation des substances organiques, uniquement en ayant une connaissance approfondie des propriétés spécifiques des substances en question et des problèmes potentiels qui y sont associés.
NOTE 4 Pour les essais d'écotoxicité, des éluats avec à la fois des substances inorganiques et organiques sont nécessaires. Dans le présent document, les essais d'écotoxicité englobent les essais de génotoxicité.
NOTE 5 En général, l'essai n'est pas adapté aux sols dont la conductivité hydraulique est inférieure à 10−8 m/s (voir également l'Annexe B). Il peut déjà s'avérer difficile de maintenir le débit indiqué pour une conductivité hydraulique saturée comprise entre 10−7 m/s et 10−8 m/s.
L'application de la présente méthode d'essai seule ne suffit pas pour déterminer le comportement à la lixiviation d'un matériau dans des conditions spécifiées différentes de celles applicables au mode opératoire,

Kakovost tal - Postopki izluževanja za nadaljnje kemijsko in ekotoksikološko preskušanje tal in tlem podobnih materialov - 3. del: Preskus v koloni s tokom navzgor (ISO 21268-3:2019)

Ta standard določa preskus, ki je namenjen ugotavljanju izluževanja anorganskih in organskih snovi iz prsti in prsti podobnih materialov. Metoda je preskus s precejanjem ob enkratnem toku navzgor v standardiziranih pogojih pretoka. Izluževanje materiala poteka pri dinamičnih hidravličnih pogojih. Dokument je bil pripravljen za merjenje sproščanja anorganskih in organskih snovi iz prsti in prsti podobnih materialov ter za izdelavo izlužkov za nadaljnje ekotoksikološke preskuse. Za ekotoksikološke preskuse glej standard ISO 15799[6] in ISO 17616[7]. Rezultati preskusa določajo razliko med različnimi vzorci sproščanja, na primer izpiranje in sproščanje pod vplivom interakcije z matriko pri približevanju lokalnemu ravnovesju med materialom in izluževalnim medijem. Ta preskusna metoda proizvede izlužke, ki jih je nato mogoče določiti s fizikalnimi, kemijskimi in ekotoksikološkimi metodami v skladu z obstoječimi standardnimi metodami. Rezultati analize izlužkov so predstavljeni kot funkcija razmerja tekoče/trdno. Preskus ni primeren za snovi, ki so hlapne pri okoljskih pogojih.

General Information

Status
Published
Public Enquiry End Date
24-Apr-2018
Publication Date
02-Dec-2019
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
04-Nov-2019
Due Date
09-Jan-2020
Completion Date
03-Dec-2019

RELATIONS

Buy Standard

Standard
SIST EN ISO 21268-3:2020 - BARVE na PDF-str 28
English language
42 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN ISO 21268-3:2020
01-januar-2020
Nadomešča:
SIST-TS CEN ISO/TS 21268-3:2010
Kakovost tal - Postopki izluževanja za nadaljnje kemijsko in ekotoksikološko
preskušanje tal in tlem podobnih materialov - 3. del: Preskus v koloni s tokom
navzgor (ISO 21268-3:2019)

Soil quality - Leaching procedures for subsequent chemical and ecotoxicological testing

of soil and soil-like materials - Part 3: Up-flow percolation test (ISO 21268-3:2019)

Bodenbeschaffenheit - Elutionsverfahren für die anschließende chemische und
ökotoxikologische Untersuchung von Boden und von Bodenmaterialien - Teil 3:
Perkolationstest im Aufwärtsstrom (ISO 21268-3:2019)
Qualité du sol - Modes opératoires de lixiviation en vue d'essais chimiques et

écotoxicologiques ultérieurs des sols et matériaux du sol - Partie 3: Essai de percolation

à écoulement ascendant (ISO 21268-3:2019)
Ta slovenski standard je istoveten z: EN ISO 21268-3:2019
ICS:
13.080.05 Preiskava tal na splošno Examination of soils in
general
SIST EN ISO 21268-3:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 21268-3:2020
---------------------- Page: 2 ----------------------
SIST EN ISO 21268-3:2020
EN ISO 21268-3
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2019
EUROPÄISCHE NORM
ICS 13.080.05 Supersedes CEN ISO/TS 21268-3:2009
English Version
Soil quality - Leaching procedures for subsequent chemical
and ecotoxicological testing of soil and soil-like materials -
Part 3: Up-flow percolation test (ISO 21268-3:2019)

Qualité du sol - Modes opératoires de lixiviation en vue Bodenbeschaffenheit - Elutionsverfahren für die

d'essais chimiques et écotoxicologiques ultérieurs des anschließende chemische und ökotoxikologische

sols et matériaux du sol - Partie 3: Essai de percolation Untersuchung von Boden und von Bodenmaterialien -

à écoulement ascendant (ISO 21268-3:2019) Teil 3: Perkolationstest im Aufwärtsstrom (ISO 21268-

3:2019)
This European Standard was approved by CEN on 1 September 2019.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21268-3:2019 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 21268-3:2020
EN ISO 21268-3:2019 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

---------------------- Page: 4 ----------------------
SIST EN ISO 21268-3:2020
EN ISO 21268-3:2019 (E)
European foreword

This document (EN ISO 21268-3:2019) has been prepared by Technical Committee ISO/TC 190 "Soil

quality" in collaboration with Technical Committee CEN/TC 444 “Test methods for environmental

characterization of solid matrices” the secretariat of which is held by NEN.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by April 2020, and conflicting national standards shall be

withdrawn at the latest by April 2020.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes CEN ISO/TS 21268-3:2009.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
Endorsement notice

The text of ISO 21268-3:2019 has been approved by CEN as EN ISO 21268-3:2019 without any

modification.
---------------------- Page: 5 ----------------------
SIST EN ISO 21268-3:2020
---------------------- Page: 6 ----------------------
SIST EN ISO 21268-3:2020
INTERNATIONAL ISO
STANDARD 21268-3
First edition
2019-09
Soil quality — Leaching procedures
for subsequent chemical and
ecotoxicological testing of soil and
soil-like materials —
Part 3:
Up-flow percolation test
Qualité du sol — Modes opératoires de lixiviation en vue d'essais
chimiques et écotoxicologiques ultérieurs des sols et matériaux du
sol —
Partie 3: Essai de percolation à écoulement ascendant
Reference number
ISO 21268-3:2019(E)
ISO 2019
---------------------- Page: 7 ----------------------
SIST EN ISO 21268-3:2020
ISO 21268-3:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting

on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 21268-3:2020
ISO 21268-3:2019(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 2

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Principle ........................................................................................................................................................................................................................ 3

5 Reagents and materials ................................................................................................................................................................................. 4

6 Apparatus ..................................................................................................................................................................................................................... 4

7 Sample pre-treatment ..................................................................................................................................................................................... 6

7.1 Preparation of laboratory sample and specification of particle size ........................................................ 6

7.2 Preparation of the test sample .................................................................................................................................................. 7

7.3 Test portion ................................................................................................................................................................................................ 7

7.4 Determination of dry matter content .................................................................................................................................. 7

8 Procedure..................................................................................................................................................................................................................... 8

8.1 Temperature .............................................................................................................................................................................................. 8

8.2 Preparation of the eluent ............................................................................................................................................................... 8

8.3 Preparation of the column ............................................................................................................................................................ 8

8.4 Packing of the column ....................................................................................................................................................................... 8

8.5 Start of the test ........................................................................................................................................................................................ 9

8.6 Sample Collection and Liquid/Solid separation step ..........................................................................................10

8.7 Collection of additional eluate fractions ........................................................................................................................11

8.8 Further preparation of the eluates for analysis .......................................................................................................12

8.9 Blank test ..................................................................................................................................................................................................12

9 Calculation ...............................................................................................................................................................................................................12

10 Test report ................................................................................................................................................................................................................13

11 Analytical determination ..........................................................................................................................................................................13

11.1 General ........................................................................................................................................................................................................13

11.2 Blank test information ...................................................................................................................................................................13

12 Performance characteristics .................................................................................................................................................................14

12.1 General ........................................................................................................................................................................................................14

12.2 Validation trials performed in Japan .................................................................................................................................15

12.2.1 Round robin tests performed in accordance with ISO/TS 21268-3:2007 ..................15

12.2.2 Robustness testing and validation results considering equilibration

period and flow rate ........................................................................................................................................... ........15

[5]

12.3 Validation results obtained in Germany (DIN 19528 ) .................................................................................16

12.3.1 General...................................................................................................................................................................................16

12.3.2 Results for validation trial 1 ................................................................................................................................17

12.3.3 Results for validation trial 2 ................................................................................................................................20

Annex A (informative) Suggestions for packing the column, water saturationand

establishment of equilibrium conditions ................................................................................................................................25

Annex B (informative) Justification of the choices made in developing the test procedure ...................27

Annex C (informative) Calculation of centrifugation duration depending on centrifugation

speed and rotor dimensions..................................................................................................................................................................31

Annex D (informative) Additional information on robustness testing and validation results

based on waste materials .........................................................................................................................................................................33

Bibliography .............................................................................................................................................................................................................................34

© ISO 2019 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 21268-3:2020
ISO 21268-3:2019(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso

.org/iso/foreword .html.

This document was prepared by Technical Committee ISO/TC 190, Soil quality, Subcommittee SC 7,

Impact assessment.

This first edition of ISO 21268-3:2019 cancels and replaces (ISO/TS 21268-3:2007), which has been

technically revised. The main changes compared to the previous edition are as follows:

— the maximum grain size has been changed to <2 mm as usual for soil;
— demineralized water has been added as possible leachant;
— the column diameter has been changed from "5 cm or 10 cm" to "5 cm to 10 cm";
— flow rate of 30 cm/d has been added as option based on robustness testing;

— 7.1 and 7.2 has been exchanged to read 7.1 "Particle size" and 7.2 "Sample preparation";

— 11.1 "General", 11.2 "Validation trials performed in Japan" and 12.3 "Validation results obtained in

Germany (DIN 19528)" have been added;
— B.2 "Particle size distribution" has been deleted;

— a new informative Annex C "Calculation of centrifugation duration depending on centrifugation

speed and rotor dimensions" has been added;
— references in Clause 2 and Bibliography has been updated.
A list of all parts in the ISO 21268 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2019 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 21268-3:2020
ISO 21268-3:2019(E)
Introduction

In various countries, tests have been developed to characterize and assess the substances which can

be released from materials. The release of soluble substances upon contact with water is regarded as

a main mechanism of release, which results in a potential risk to the environment during the use or

disposal of materials. The intent of these tests is to identify the leaching properties of materials. The

[1]
complexity of the leaching process makes simplifications necessary .

Not all of the relevant aspects of leaching behaviour can be addressed in one standard (see description

of influencing factors in Annex A).

Tests to characterise the behaviour of materials can generally be divided into three categories addressed

[2] [3]

in ISO 18772 and EN 12920 . The relationships between these tests are summarized below.

a) “Basic characterization” tests are used to obtain information on the short- and long-term

leaching behaviour and characteristic properties of materials. Liquid/solid (L/S) ratios, leachant

composition, factors controlling leachability, such as pH, redox potential, complexing capacity, role

of dissolved organic carbon (DOC), ageing of material and physical parameters, are addressed in

these tests.

b) “Compliance” tests are used to determine whether the material complies with a specific behaviour

or with specific reference values. The tests focus on key variables and leaching behaviour previously

identified by basic characterisation tests.

c) “On-site verification” tests are used as a rapid check to confirm that the material is the same as that

which has been subjected to the compliance test(s). On-site verification tests are not necessarily

leaching tests.

The test procedure described in this method belongs to category a): basic characterization tests.

[4]

This document was originally elaborated on the basis of CEN/TS 14405:2004 . Especially,

modifications considering requirements on subsequent ecotoxicological testing and analysis of organic

[5]

substances have been included. Validation results have been adopted from DIN 19528 and from

[15,16]
Japanese validation studies .
© ISO 2019 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST EN ISO 21268-3:2020
---------------------- Page: 12 ----------------------
SIST EN ISO 21268-3:2020
INTERNATIONAL STANDARD ISO 21268-3:2019(E)
Soil quality — Leaching procedures for subsequent
chemical and ecotoxicological testing of soil and soil-like
materials —
Part 3:
Up-flow percolation test
1 Scope

This document specifies a test, which is aimed at determining the leaching behaviour of inorganic

and organic substances from a soil and soil-like materials. The method is a once-through up-flow

percolation test under standardized conditions of flow rate. The material is leached under dynamic

hydraulic conditions. The document has been developed to measure the release of inorganic and organic

substances from soil and soil-like material as well as to produce eluates for subsequent ecotoxicological

[6] [7]

testing. For ecotoxicological testing, see ISO 15799 and ISO 17616 . The test results enable the

distinction between different release patterns, for instance wash-out and release under the influence of

interaction with the matrix, when approaching local equilibrium between material and leachant.

This test method produces eluates, which can subsequently be characterized by physical, chemical and

ecotoxicological methods in accordance with existing standard methods. The results of eluate analysis

are presented as a function of the liquid/solid (L/S) ratio. The test is not suitable for substances that are

volatile under ambient conditions.

NOTE 1 Volatile organic substances include the low-molecular-weight substances in mixtures such as

mineral oil.

NOTE 2 It is not always possible to optimize test conditions simultaneously for inorganic and organic

substances and optimum test conditions can also vary between different groups of organic substances. Test

requirements for organic substances are generally more stringent than those for inorganic substances. The test

conditions suitable for measuring the release of organic substances will generally also be applicable to inorganic

substances.

NOTE 3 Within the category of organic substances, a significant difference in behaviour exists between the

more polar, relatively water-soluble compounds and apolar, hydrophobic organic substances (HOCs). In the latter

case, mechanisms of release (e.g. particle-bound or dissolved organic carbon-bound) can be more crucial as well

as sorption losses of soluble HOCs on different materials with which they come in contact (e.g. bottles, filters).

The test and the results should be used for leaching of organic substances only with thorough consideration of

the specific properties of the substances in question and the associated potential problems.

NOTE 4 For ecotoxicological testing, eluates representing the release of both inorganic and organic substances

are needed. In this document, ecotoxicological testing is also meant to include genotoxicological testing.

NOTE 5 The test is generally not suitable for soils with hydraulic conductivities below 10 m/s (see also

Annex B). It can be difficult to maintain the designated flow rate already in the range of saturated hydraulic

−7 −8
conductivity between 10 m/s and 10 m/s.

The application of this test method alone is not sufficient for the determination of the leaching

behaviour of a material under specified conditions different to those from the test procedure, since this

generally requires the application of several test methods, behavioural modelling and model validation.

This document does not address issues related to health and safety. It only determines the leaching

properties as outlined in Clause 4.
© ISO 2019 – All rights reserved 1
---------------------- Page: 13 ----------------------
SIST EN ISO 21268-3:2020
ISO 21268-3:2019(E)
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 3696, Water for analytical laboratory use — Specification and test methods

ISO 5667-3:2018, Water quality — Sampling — Part 3: Preservation and handling of water samples

ISO 5725-1:1994, Accuracy (trueness and precision) of measurement methods and results — Part 1: General

principles and definitions

ISO 5725-2:1994, Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic

method for the determination of repeatability and reproducibility of a standard measurement method

ISO 7027-1, Water quality — Determination of turbidity — Part 1: Quantitative methods

ISO 10523, Water quality — Determination of pH

ISO 11465, Soil quality — Determination of dry matter and water content on a mass basis —

Gravimetric method
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
leaching test

test during which a material is put into contact with a leachant (3.2) under strictly defined conditions

and some substances of the material are extracted
3.2
leachant
liquid used in a leaching test (3.1)

Note 1 to entry: For the purposes of this document, the leachant is specified in 5.1.

3.3
eluate
solution recovered from a leaching test (3.1)
Note 1 to entry: Eluate is also referred to as leachate.
3.4
liquid to solid ratio
L/S

ratio between the total volume of liquid (L in litres), which in this extraction is in contact with the soil

sample, and the dry mass of the sample (S in kg of dry matter).
Note 1 to entry: L/S is expressed in l/kg.
2 © ISO 2019 – All rights reserved
---------------------- Page: 14 ----------------------
SIST EN ISO 21268-3:2020
ISO 21268-3:2019(E)
3.5
dry matter content

ratio expressed in percent between the mass of the dry residue, determined in accordance with

ISO 11465 and the corresponding raw mass.
3.6
laboratory sample
sample or subsample(s) sent to or received by the laboratory
3.7
test sample

sample, prepared from the laboratory sample (3.6), from which test portions (3.8) are removed for

testing or analysis
3.8
test portion

quantity of material of appropriate size for measurement of the concentration or other properties of

interest, taken from the test sample (3.7)

Note 1 to entry: The test portion can be taken from the laboratory sample directly if no pre-treatment of sample

is required, but usually it is taken from the test sample.

Note 2 to entry: A unit or increment of proper homogeneity, size and fineness, needing no further preparation,

can be a test portion.
3.9
soil-like material

excavated soil, dredged materials, manufactured soils, treated soils and fill materials

4 Principle

This document describes a method to determine the release of substances from soil and soil-like

material, packed in a column with leachant percolating through it. A continuous vertical up-flow is

used, which allows a column test under water-saturated conditions. The test conditions, including

the flow rate of the leachant, are chosen such that the substances that are rapidly washed out and the

substances that are released under the influence of interaction with the matrix can be deduced from

the results. It is intended and assumed that conditions approach local equilibrium between the material

and the leachant throughout the test.

The test portion, which originally or after suitable pre-treatment has a particle size less than or equal

to 2 mm, is brought into contact with water containing a low concentration (0,001 mol/l) of calcium

chloride or demineralised water (5.1) under defined conditions. The leachant is percolated in up-flow

direction through the column at a specified flow rate up to a fixed L/S ratio. The eluate is collected in

several separate fractions. The standard method is based on the assumption that equilibrium or near-

equilibrium is achieved between the liquid and solid phases during the test period. The properties

of the eluate are measured using methods developed for water analysis adapted to meet criteria for

analysis of eluates, and the eluate may be subjected to subsequent ecotoxicological testing.

After the test, the leaching conditions, in terms of pH, electrical conductivity, and optionally, turbidity,

dissolved organic carbon (DOC) or redox potential imposed by the material shall be recorded.

NOTE 1 These parameters often control the leaching behaviour of soil materials and are therefore important

for evaluation of the test results. DOC, in particular, is crucial in soil and soil-

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.