NF EN ISO 12782-4

NF EN ISO 12782-4

July 2012
Standard Current

Soil quality - Parameters for geochemical modelling of leaching and speciation of constituents in soils and soil materials - Part 4 : extraction of humic substances from solid samples

ISO 12782-4:2012 specifies a procedure to determine the concentration of humic substances in soil or other materials. Other materials also include waste. The content of humic substances can be used as input in geochemical models.

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Main informations

Collections

National standards and national normative documents

Publication date

July 2012

Number of pages

32 p.

Reference

NF EN ISO 12782-4

ICS Codes

13.080.05   Examination of soils in general

Classification index

X31-090-4

Print number

1 - 31/07/2012

International kinship

ISO 12782-4:2012

European kinship

EN ISO 12782-4:2012
Sumary
Soil quality - Parameters for geochemical modelling of leaching and speciation of constituents in soils and soil materials - Part 4 : extraction of humic substances from solid samples

ISO 12782-4:2012 specifies a procedure to determine the concentration of humic substances in soil or other materials. Other materials also include waste. The content of humic substances can be used as input in geochemical models.

Table of contents
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  • 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
    5
  • 7.1 Taille de l'échantillon
    5
  • 7.2 Réduction granulométrique
    5
  • 7.3 Détermination du résidu sec
    6
  • 7.4 Prise d'essai
    6
  • 8 Mode opératoire
    7
  • 8.1 Préparation de la résine DAX-8
    7
  • 8.2 Détermination de la teneur totale en acides humiques (HA), acides fulviques (FA) et carbone organique hydrophile (Hy) dans les matériaux sources solides
    7
  • 9 Traitement et conservation des éluats
    8
  • 10 Dosage analytique
    8
  • 11 Essai à blanc
    8
  • 12 Calcul
    8
  • 12.1 Facteurs de correction généraux pour les calculs des acides humiques (HA), des acides fulviques (FA), du carbone organique hydrophile (Hy) et du carbone organique neutre hydrophobe (HON) dans les échantillons liquides et solides
    8
  • 12.2 Concentrations des acides humiques (HA), des acide fulviques (FA), du carbone organique hydrophile (Hy) et du carbone organique neutre hydrophobe (HON) totaux dans les échantillons solides
    9
  • 13 Expression des résultats
    11
  • 14 Rapport d'essai
    11
  • 15 Caractéristiques de performance
    12
  • Annexe A (informative) Représentation schématique de la procédure de fractionnement
    13
  • Annexe B (informative) Validation du mode opératoire
    15
  • Annexe C (informative) Conditions concernant la centrifugation
    20
  • Bibliographie
    23
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