EN ISO 12782-5:2012
(Main)Soil quality - Parameters for geochemical modelling of leaching and speciation of constituents in soils and materials - Part 5: Extraction of humic substances from aqueous samples (ISO 12782-5:2012)
Soil quality - Parameters for geochemical modelling of leaching and speciation of constituents in soils and materials - Part 5: Extraction of humic substances from aqueous samples (ISO 12782-5:2012)
ISO 12782-5:2012 specifies a procedure to determine the concentration of humic substances in aqueous samples. These samples may be obtained as such or as eluates from leaching procedures applied to soil or other materials. Other materials also include waste.The content of humic substances can be used as input in geochemical models.
Bodenbeschaffenheit - Parameter zur geochemischen Modellierung der Elution und Speziation von Bestandteilen in Böden und Materialien - Teil 5: Extraktion von Huminstoffen aus wässrigen Proben (ISO 12782-5:2012)
Der vorliegende Teil der ISO 12782 legt ein Verfahren zur Bestimmung der Konzentration von Huminstoffen in
wässrigen Proben fest. Diese Proben können als solche oder als Eluate aus den für Böden und andere
Materialien geltenden Elutionsverfahren erhalten werden. Andere Materialien schließen ebenfalls Abfall ein.
Der Gehalt an Huminstoffen kann als Vorgabe in geochemischen Modellen verwendet werden.
Qualité du sol - Paramètres pour la modélisation géochimique de la lixiviation et de la spéciation des constituants des sols et des matériaux - Partie 5: Extraction des substances humiques des échantillons aqueux (ISO 12782-5:2012)
L'ISO 12782-5:2012 spécifie un mode opératoire pour déterminer la concentration des substances humiques dans les échantillons aqueux. Ces échantillons peuvent être obtenus en l'état ou sous forme d'éluats par des modes opératoires de lixiviation appliqués au sol ou aux autres matériaux. Les autres matériaux incluent également les déchets. La teneur en substances humiques peut être utilisée comme une donnée d'entrée dans les modèles géochimiques.
Kakovost tal - Parametri geokemijskega modeliranja izpiranja in speciacija sestavin v tleh in talnih materialih - 5. del: Ekstrakcija huminskih snovi iz vodnih vzorcev (ISO 12782-5:2012)
Ta del standarda ISO 12782 opisuje postopek za določevanje koncentracije huminskih snovi v vodnih vzorcih. Te vzorce je mogoče pridobiti kot take ali kot izlužke iz postopkov izpiranja, ki se uporabljajo za tla ali talne materiale. Med materiale spadajo tudi odpadki, opisani v uvodu.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2013
Kakovost tal - Parametri geokemijskega modeliranja izpiranja in speciacija
sestavin v tleh in talnih materialih - 5. del: Ekstrakcija huminskih snovi iz vodnih
vzorcev (ISO 12782-5:2012)
Soil quality - Parameters for geochemical modelling of leaching and speciation of
constituents in soils and materials - Part 5: Extraction of humic substances from aqueous
samples (ISO 12782-5:2012)
Bodenbeschaffenheit - Parameter zur geochemischen Modellierung der Elution und
Speziation von Bestandteilen in Böden und Materialien - Teil 5: Extraktion von
Huminstoffen aus wässrigen Proben (ISO 12782-5:2012)
Qualité du sol - Paramètres pour la modélisation géochimique de la lixiviation et de la
spéciation des constituants des sols et des matériaux - Partie 5: Extraction des
substances humiques des échantillons aqueux (ISO 12782-5:2012)
Ta slovenski standard je istoveten z: EN ISO 12782-5:2012
ICS:
13.080.10 .HPLMVNH]QDþLOQRVWLWDO Chemical characteristics of
soils
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 12782-5
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2012
ICS 13.080.05
English Version
Soil quality - Parameters for geochemical modelling of leaching
and speciation of constituents in soils and materials - Part 5:
Extraction of humic substances from aqueous samples (ISO
12782-5:2012)
Qualité du sol - Paramètres pour la modélisation
Bodenbeschaffenheit - Parameter zur geochemischen
géochimique de la lixiviation et de la spéciation des Modellierung der Elution und Speziation von Bestandteilen
constituants des sols et des matériaux - Partie 5: Extraction in Böden und Materialien - Teil 5: Extraktion von
des substances humiques des échantillons aqueux (ISO Huminstoffen aus wässrigen Proben (ISO 12782-5:2012)
12782-5:2012)
This European Standard was approved by CEN on 31 May 2012.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12782-5:2012: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
This document (EN ISO 12782-5:2012) has been prepared by Technical Committee ISO/TC 190 "Soil quality"
in collaboration with Technical Committee CEN/TC 345 “Characterization of soils” 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 December 2012, and conflicting national standards shall be withdrawn
at the latest by December 2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organisations 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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 12782-5:2012 has been approved by CEN as a EN ISO 12782-5:2012 without any
modification.
INTERNATIONAL ISO
STANDARD 12782-5
First edition
2012-06-01
Soil quality — Parameters for geochemical
modelling of leaching and speciation of
constituents in soils and materials —
Part 5:
Extraction of humic substances from
aqueous samples
Qualité du sol — Paramètres pour la modélisation géochimique de la
lixiviation et de la spéciation des constituants des sols et des matériaux —
Partie 5: Extraction des substances humiques des échantillons aqueux
Reference number
ISO 12782-5:2012(E)
©
ISO 2012
ISO 12782-5:2012(E)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
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Published in Switzerland
ii © ISO 2012 – All rights reserved
ISO 12782-5:2012(E)
Contents Page
Foreword .iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 3
5 Apparatus . 3
6 Reagents . 3
7 Sampling . 4
7.1 Laboratory sample . 4
7.2 Test sample . 4
7.3 Test portion . 4
8 Procedure . 4
8.1 Preparation of DAX-8 resin . 4
8.2 Determination of total humic acid (HA), fulvic acid (FA) and hydrophilic organic carbon (Hy)
content in aqueous samples . 5
9 Eluate treatment and storage . 5
10 Analytical determination . 5
11 Blank test . 5
12 Calculation . 6
12.1 General correction factors for the calculation of humic acid (HA), fulvic acid (FA), hydrophilic
organic carbon (Hy) and hydrophobic neutral organic carbon (HON) in aqueous samples . 6
12.2 Concentration of total humic acid (HA), fulvic acid (FA), hydrophilic organic carbon (Hy) and
hydrophobic neutral organic carbon (HON) concentrations in aqueous samples . 7
13 Expression of results . 8
14 Test report . 8
15 Performance characteristics . 8
Annex A (informative) Schematic representation of the fractionation procedure . 9
Annex B (informative) Validation of procedure . 11
Annex C (informative) Conditions regarding centrifugation .16
Bibliography .19
ISO 12782-5:2012(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 12782-5 was prepared by Technical Committee ISO/TC 190, Soil quality, Subcommittee SC 7, Soil and
site assessment.
ISO 12782 consists of the following parts, under the general title Soil quality — Parameters for geochemical
modelling of leaching and speciation of constituents in soils and materials:
— Part 1: Extraction of amorphous iron oxides and hydroxides with ascorbic acid
— Part 2: Extraction of crystalline iron oxides and hydroxides with dithionite
— Part 3: Extraction of aluminium oxides and hydroxides with ammonium oxalate/oxalic acid
— Part 4: Extraction of humic substances from solid samples
— Part 5: Extraction of humic substances from aqueous samples
iv © ISO 2012 – All rights reserved
ISO 12782-5:2012(E)
Introduction
In addition to leaching procedures for subsequent chemical and ecotoxicological testing of soil and other
materials including waste, predictive models are becoming indispensable tools in the environmental risk
assessment of these materials. Models are particularly required when the results of laboratory leaching tests
are to be translated to specific scenarios in the field, with regard to assessing the risks of both contaminant
migration and bioavailability.
In the past few years, geochemical models have been shown to be valuable tools to be combined with the
data obtained from characterization leaching standards, such as pH-dependence and percolation tests. These
models have the advantage of being based on fundamental thermodynamic parameters that have a general
validity. In order to enable extrapolation of laboratory leaching data to the mobility and/or bioavailability of
a constituent in a specific field scenario, these models require additional input parameters for specific soil
properties (see Figure 1).
Key
1 experiment
2 geochemical speciation modelling
3 available metal concentration
4 dissolved humic substances
5 reactive (solid) surfaces
6 data
...
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