EN 17505:2023

SLOVENSKI STANDARD
01-junij-2024
Karakterizacija tal in odpadkov - Diferenciacija celotnega ogljika v odvisnosti od
temperature (TOC400, ROC, TIC900)
Soil and waste characterization - Temperature dependent differentiation of total carbon
(TOC400, ROC, TIC900)
Boden- und Abfallbeschaffenheit - Temperaturabhängige Unterscheidung von
Gesamtkohlenstoff (TOC400, ROC, TIC900)
Caractérisation des sols et des déchets - Différentiation en fonction de la température du
carbone total (COT400, COR, CIT900)
Ta slovenski standard je istoveten z: EN 17505:2023
ICS:
13.030.10 Trdni odpadki Solid wastes
13.080.10 Kemijske značilnosti tal Chemical characteristics of
soils
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 17505
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2023
EUROPÄISCHE NORM
ICS 13.030.10; 13.080.10
English Version
Soil and waste characterization - Temperature dependent
differentiation of total carbon (TOC400, ROC, TIC900)
Caractérisation des sols et des déchets - Différentiation Boden- und Abfallbeschaffenheit -
en fonction de la température du carbone total Temperaturabhängige Unterscheidung von
(COT400, COR, CIT900) Gesamtkohlenstoff (TOC400, ROC, TIC900)
This European Standard was approved by CEN on 16 July 2023.

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, Türkiye 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
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17505:2023 E
worldwide for CEN national Members.

FprEN 17505:2023 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 6
5 Interferences . 6
5.1 Interference due to carbides . 6
5.2 Interference due to sulfur and nitrogen compounds . 7
5.3 Interference due to carbonates . 7
5.4 Peak does not reach the baseline . 9
5.5 Difficulties in separating ROC peak and TIC peak . 10
600 900A
5.6 Interferences due to premature releases and deflagrations . 11
5.7 Interferences due to catalytic active substances in samples. 11
6 Reagents . 11
6.1 General . 11
6.2 Standards for system control . 12
7 Apparatus . 13
7.1 Homogenization equipment, e.g. mixer, stirrer, grinders, mills. . 13
7.2 Analytical balance, (precise to at least 0,5 % of the test portion weight). . 13
7.3 Equipment for determining different carbon types in solids . 13
8 Procedure. 13
8.1 General . 13
8.2 Sample preparation and processing . 13
8.3 Calibration . 13
8.4 Measurement (Oxidative method A) . 13
8.5 Measurement (Mixed oxidative/non-oxidative method B) . 15
9 Evaluation . 16
9.1 General . 16
9.2 Control measurements . 18
10 Expression of results . 19
11 Test report . 19
Annex A (informative) Performance characteristics . 20
Annex B (informative) Cooling procedure for method B . 30
Bibliography . 31

European foreword
This document (EN 17505:2023) has been prepared by Technical Committee CEN/TC 444
“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 2024, and conflicting national standards shall be
withdrawn at the latest by April 2024.
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.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
FprEN 17505:2023 (E)
Introduction
Carbon occurs in soils and materials similar to soil in a variety of compounds and forms. When
determining carbon in soils or soil-like materials, an overall determination of the different mass fractions
is most feasible. The summarized declaration of carbon is yet done by differentiating organic and
inorganic carbon (EN 15936, ISO 10694). In the proportion classified as “organic carbon”, a fraction of
very stable highly aromatic and highly condensed carbon compounds can be present, sometimes in
significant mass fractions. Since this black (pyrogenic) carbon is only very slowly decomposed and
released, its environmental relevance has to be differently evaluated than the proportions of organic
carbon which are faster chemical-biologically decomposed. The environmental relevance is estimated if
e.g. the suitability of soils and soil-like materials for disposal in landfill is assessed. For a differentiated
assessment, a separate declaration of the different mass fractions of organic, black (pyrogenic) and
inorganic carbon is necessary. Using the specified temperature-gradient method and utilizing the
combustion characteristic(s), the carbon fractions established according to this standard in soil and soil-
like materials can be differentiated.
In respect of the hazard potential, the content of solely organically bonded carbon in solids determined
with the described method can be important for disposal and/or recycling.
The method has been validated with the materials listed in Table 1, see also Annex A.
Table 1 — Materials used for validation
Material type Materials used for validation
soils from natural material mineral soils
soil with anthropogenic admixtures
(urban soils)
tailing material (tailings) tailing material from coal mining
sediment sediment
waste waste incineration ash
foundry sand
construction waste
1 Scope
This document specifies a method for the differentiated determination of the organic carbon content
(TOC ) which is released at temperatures up to 400 °C, the residual oxidizable carbon (ROC) (including
e.g. lignite (brown coal), hard coal, charcoal, black carbon, soot) and the inorganic carbon (TIC ) which
is released at temperatures up to 900 °C.
The basis is the dry combustion or decomposition of carbon to CO in the presence of oxygen or non-
oxygen conditions using temperatures ranging from 150 °C to 900 °C in dry solid samples of sediment,
soil, soil with anthropogenic admixtures and solid waste (see Table 1) with carbon contents of more than
1 g per kg (0,1 % C) (per carbon type in the test portion).
NOTE TIC900’ includes the TIC measured after acid addition e.g. by ISO 10694 or EN 15936. TOC400 is a fraction
of TOC measured according to e.g. ISO 10694 or EN 15936.
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 16179, Sludge, treated biowaste and soil - Guidance for sample pretreatment
EN 15002, Characterization of waste - Preparation of test portions from the laboratory sample
ISO 11464, Soil quality — Pretreatment of samples for physico-chemical analysis
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 https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
total organic carbon which is released up to 400 °C
TOC
quantity of carbon which is determined in the range between 150 °C – (400 ± 20) °C to the 1st signal
minimum after the minimum holding time at (400 ± 20) °C, in the case of dry combustion in the presence
of oxygen
Note 1 to entry: TOC400 is a fraction of TOC measured e.g. by ISO 10694 or EN 15936.
3.2
residual oxidizable carbon measured at 600°C
ROC
quantity of carbon which is determined between the signal minima at (400 ± 20) °C and at (600 ± 20) °C
after the minimum holding time at (600 ± 20) °C, in the case of dry combustion in the presence of oxygen
following method A (procedure see 8.4)
Note 1 to entry: ROC600 may differ from ROC900 for some materials
FprEN 17505:2023 (E)
3.3
residual oxidizable carbon measured at 900°C
ROC
quantity of carbon which is determined during dry combustion in the presence of oxygen after the
completed carbon release for the TOC and TIC measurement at (900 ± 20) °C to the first signal
400 900B
minimum after the minimum holding time at (900 ± 20) °C following method B (procedure see
...