Soil quality — Parameters for geochemical modelling of leaching and speciation of constituents in soils and materials — Part 2: Extraction of crystalline iron oxides and hydroxides with dithionite

ISO 12782-2:2012 specifies the determination of the content of "reactive" iron in the form of crystralline iron oxides and hydroxides in soil and other materials by extraction with dithionite. Other materials also include waste. The content of "reactive" iron can be used as input in geochemical models to represent the content of crystalline iron (hydr)oxides.

Qualité du sol — Paramètres pour la modélisation géochimique de la lixiviation et de la spéciation des constituants des sols et des matériaux — Partie 2: Extraction des oxydes et hydroxydes de fer cristallin avec le dithionite

L'ISO 12782-2:2012 spécifie la détermination de la teneur en fer «réactif» présent sous forme d'oxydes et d'hydroxydes de fer cristallin dans le sol et autres matériaux par extraction avec le dithionite. Les autres matériaux incluent également les déchets. La teneur en fer «réactif» peut être utilisée comme une donnée d'entrée dans les modèles géochimiques pour représenter la teneur en oxydes et hydroxydes de fer cristallin.

General Information

Status

Published

Publication Date

31-May-2012

ICS

13.080.05 - Examination of soils in general

Technical Committee

ISO/TC 190/SC 7 - Impact assessment

Drafting Committee

ISO/TC 190/SC 7/WG 6 - Transfer and mobility of components

Current Stage

9093 - International Standard confirmed

Completion Date

16-Oct-2023

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ISO 12782-2:2012 - Soil quality -- Parameters for geochemical modelling of leaching and speciation of constituents in soils and materials

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ISO 12782-2:2012 - Qualité du sol -- Parametres pour la modélisation géochimique de la lixiviation et de la spéciation des constituants des sols et des matériaux

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ISO 12782-2:2012 - Qualité du sol -- Parametres pour la modélisation géochimique de la lixiviation et de la spéciation des constituants des sols et des matériaux

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INTERNATIONAL ISO
STANDARD 12782-2
First edition
2012-06-01
Soil quality — Parameters for geochemical
modelling of leaching and speciation of
constituents in soils and materials —
Part 2:
Extraction of crystalline iron oxides and
hydroxides with dithionite
Qualité du sol — Paramètres pour la modélisation géochimique de la
lixiviation et de la spéciation des constituants des sols et des matériaux —
Partie 2: Extraction des oxydes et hydroxydes de fer cristallin avec
le dithionite
Reference number
ISO 12782-2:2012(E)
©
ISO 2012

---------------------- Page: 1 ----------------------
ISO 12782-2:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012
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.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 12782-2:2012(E)
Contents Page
Foreword .iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Principle . 2
5 Apparatus . 3
6 Reagents . 3
7 Sample pretreatment . 4
7.1 Sample size . 4
7.2 Particle size reduction . 4
7.3 Determination of the water content . 5
8 Procedure . 5
8.1 Preparation of the extraction solution . 5
8.2 Extraction . 5
8.3 Analytical determination . 5
9 Calculation . 6
10 Expression of results . 6
11 Test report . 6
Annex A (informative) Conditions regarding centrifugation . 7
Bibliography .10
© ISO 2012 – All rights reserved iii

---------------------- Page: 3 ----------------------
ISO 12782-2:2012(E)
Foreword
ISO (the International Organization for S
...

NORME ISO
INTERNATIONALE 12782-2
Première édition
2012-06-01
Qualité du sol — Paramètres pour
la modélisation géochimique de la
lixiviation et de la spéciation des
constituants des sols et des matériaux —
Partie 2:
Extraction des oxydes et hydroxydes de
fer cristallin avec le dithionite
Soil quality — Parameters for geochemical modelling of leaching and
speciation of constituents in soils and materials —
Part 2: Extraction of crystalline iron oxides and hydroxides with dithionite
Numéro de référence
ISO 12782-2:2012(F)
©
ISO 2012

---------------------- Page: 1 ----------------------
ISO 12782-2:2012(F)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2012
Droits de reproduction réservés. Sauf prescription différente, aucune partie de cette publication ne peut être reproduite ni utilisée sous
quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie et les microfilms, sans l’accord écrit
de l’ISO à l’adresse ci-après ou du comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Publié en Suisse
ii © ISO 2012 – Tous droits réservés

---------------------- Page: 2 ----------------------
ISO 12782-2:2012(F)
Sommaire Page
Avant-propos .iv
Introduction . v
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 2
4 Principe . 3
5 Appareillage . 3
6 Réactifs . 4
7 Prétraitement de l’échantillon . 4
7.1 Taille de l’échantillon . 4
7.2 Réduction granulométrique . 4
7.3 Détermination de la teneur en eau . 5
8 Mode opératoire . 5
8.1 Préparation de la solution d’extraction . 5
8.2 Extraction . 6
8.3 Dosage analytique . 6
9 Calcul . 6
10 Expression des résultats . 6
11 Rapport d’essai . 7
Annexe A (informative) Conditions concernant la centrifugation . 8
Bibliographie . 11
© ISO 2012 – Tous droits réservés iii

---------------------- Page: 3 ----------------------
ISO 12782-2:2012(F)
Avant-propos
L’ISO (Organisation internationale de
...

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