Soil, waste, treated biowaste and sludge - Determination of loss on ignition

This document specifies a method for the determination of the loss on ignition (LOI) at 550 °C. The dry matter is determined according to EN 15934.
This method applies to the determination of loss on ignition of sediment, sludge, treated biowaste, soil and waste.
NOTE   The loss on ignition is often used as an estimate for the content of organic matter in the sample. Inorganic substances or decomposition products (e.g. H2O, CO2, SO2, O2) are released or absorbed and some inorganic substances are volatile under the reaction conditions.

Boden, Abfall, behandelter Bioabfall und Schlamm - Bestimmung des Glühverlusts

Dieses Dokument legt ein Verfahren zur Bestimmung des Glühverlusts von Trockenmasse bei 550 °C fest. Die Trockenmasse wird mit dem Verfahren nach EN 15934 bestimmt.
Dieses Verfahren zur Bestimmung des Glühverlusts ist anwendbar für Sediment, Schlamm, behandelten Bioabfall, Boden und Abfall.
ANMERKUNG   Der Glühverlust dient oft als Schätzwert für den Gehalt an organischen Bestandteilen in der Probe. Anorganische Stoffe oder Zersetzungsprodukte (z. B. H2O, CO2, SO2, O2) werden freigesetzt oder aufgenommen und einige anorganische Stoffe sind unter den Reaktionsbedingungen flüchtig.

Sols, déchets, biodéchets traités et boues - Détermination de la perte au feu

Le présent document spécifie une méthode de détermination de la perte au feu (LOI) à 550 °C. La teneur en matière sèche est déterminée conformément à l’EN 15934.
Cette méthode s’applique à la détermination de la perte au feu des sédiments, des boues, des biodéchets traités, des sols et des déchets.
NOTE   La perte au feu est souvent utilisée comme une estimation de la teneur en matière organique dans l'échantillon. Des substances inorganiques ou des produits de décomposition (par exemple, H2O, CO2, SO2, O2) sont libérés ou absorbés et certaines substances inorganiques sont volatiles dans les conditions opératoires.

Blato, obdelani biološki odpadki, tla in odpadki - Določevanje žarilne izgube

General Information

Status
Not Published
Current Stage
6055 - CEN Ratification completed (DOR) - Publishing
Due Date
04-Jul-2021
Completion Date
04-Jul-2021

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SLOVENSKI STANDARD
oSIST prEN 15935:2020
01-april-2020
Blato, obdelani biološki odpadki, tla in odpadki - Določevanje žarilne izgube
Sludge, treated biowaste, soil and waste - Determination of loss on ignition
Schlamm, behandelter Bioabfall, Boden und Abfall - Bestimmung des Glühverlusts
Boue, biodéchet traité, sol et déchets - Détermination de la perte au feu
Ta slovenski standard je istoveten z: prEN 15935
ICS:
13.030.20 Tekoči odpadki. Blato Liquid wastes. Sludge
oSIST prEN 15935:2020 en,fr,de

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

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oSIST prEN 15935:2020
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oSIST prEN 15935:2020
DRAFT
EUROPEAN STANDARD
prEN 15935
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2020
ICS Will supersede EN 15169:2007, EN 15935:2012
English Version
Sludge, treated biowaste, soil and waste - Determination of
loss on ignition
Schlamm, behandelter Bioabfall, Boden und Abfall -
Bestimmung des Glühverlusts

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 444.

If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 15935:2020 E

worldwide for CEN national Members.
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oSIST prEN 15935:2020
prEN 15935:2020 (E)
Contents Page

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

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 5

4 Principle ............................................................................................................................................................. 5

5 Interferences and sources of errors ......................................................................................................... 5

6 Apparatus ........................................................................................................................................................... 6

6.1 Crucible, preferably flat bottom type and typically 50 mm to 70 mm in diameter,

suitable for ignition at 550 °C, e.g. made of nickel, platinum, porcelain, or silica. .................. 6

6.2 Furnace, capable of maintaining a temperature of (550 ± 25) °C .................................................. 6

6.3 Metal plate, or comparable plate, suitable for the initial cooling of crucibles ......................... 6

6.4 Desiccator, with an active drying agent, such as silica gel ............................................................... 6

6.5 Balance, with an accuracy of at least 1 mg ............................................................................................. 6

7 Procedure........................................................................................................................................................... 6

7.1 Preservation...................................................................................................................................................... 6

7.2 Pretreatment .................................................................................................................................................... 6

7.3 Determination .................................................................................................................................................. 6

7.4 Samples containing volatile substances ................................................................................................. 7

8 Calculation and expression of results ...................................................................................................... 8

9 Performance characteristics ....................................................................................................................... 8

10 Test report ......................................................................................................................................................... 8

Annex A (informative) Performance characteristics ...................................................................................... 9

A.1 Materials used in the interlaboratory comparison study ................................................................ 9

A.2 Interlaboratory comparison results ..................................................................................................... 10

Bibliography ................................................................................................................................................................. 11

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oSIST prEN 15935:2020
prEN 15935:2020 (E)
European foreword

This document (prEN 15935:2020) has been prepared by Technical Committee CEN/TC 444 “Test

methods for environmental characterization of solid matrices”, the secretariat of which is held by NEN.

This document is currently submitted to the CEN Enquiry.
This document will supersede EN 15169:2007and EN 15936:2012.
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oSIST prEN 15935:2020
prEN 15935:2020 (E)
Introduction

The method described in this document has been developed from EN 15169 (derived from EN 12879)

which was prepared by CEN/TC 292 and from EN 15935:2012 which was prepared by CEN/TC 400.

This European Standard is applicable and validated for several types of matrices as indicated in Table 1

(see also Annex A for the results of the validation).
Table 1 — Matrices for which this European Standard is applicable and validated
Matrix Materials used for validation
Sludge Municipal sludge
Biowaste Compost,
Fresh Compost
Soil Sludge amended soil,
Agricultural soil
Waste Contaminated soil,
Dredged sludge (sediment),
Nickel sludge
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oSIST prEN 15935:2020
prEN 15935:2020 (E)
1 Scope

This document specifies a method for the determination of the loss on ignition (LOI) of dry matter at

550 °C. The dry matter is determined according to EN 15934.

This method applies to the determination of loss on ignition of sediment, sludge, treated biowaste, soil

and waste.

NOTE The loss on ignition is often used as an estimate for the content of organic matter in the sample. Inorganic

substances or decomposition products (e.g. H O, CO , SO , O ) are released or absorbed and some inorganic

2 2 2 2
substances are volatile under the reaction conditions.
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.

EN 15934, Sludge, treated biowaste, soil and waste - Calculation of dry matter fraction after determination

of dry residue or water content
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:

— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
loss on ignition
LOI

mass fraction lost by incineration of a dried sample to constant mass at a specified temperature

3.2
residue on ignition

mass fraction remaining after incineration of a dried sample to constant mass at a specified temperature

4 Principle

A weighed test portion is incinerated in a furnace to constant mass at (550 ± 25) °C. The difference in

mass before and after the ignition process is used to calculate the loss on ignition.

The determination is performed on a dried sample or directly on the undried sample including a drying

step or by referring to the dry matter.
5 Interferences and sources of errors

LOI is an empirical parameter, thus in principle there is no interference connected to the determination.

However, for some purposes the determination of LOI is used for the assessment of the content of organic

matter in the sample. It should be noted that elemental carbon in the sample will be included in the loss

on ignition value. Furthermore, any volatilisation or chemical reactions of inorganic compounds will also

be included in the loss on ignition value.

Chemically bound water could be released during heating, thereby contributing to the loss on ignition.

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oSIST prEN 15935:2020
prEN 15935:2020 (E)

Samples containing iron or other metals in low bonding state or in metallic state could be oxidized during

heating, thereby contributing to the loss on ignition with a negative amount.

Sulfides present in the sample could be oxidized to sulfate during heating, thereby contributing to the

loss on ignition with a negative amount.

Explosive ignition is likely to result in loss of residue from the crucible, thereby contributing to the loss

on ignition.
Calcium hydrox
...

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