Water quality - Determination of mercury - Enrichment methods by amalgamation

Le présent document s'adresse aux laboratoires ayant à doser le mercure total, à de faibles concentrations dans les eaux.

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Main informations

Collections

National standards and national normative documents

Publication date

October 1998

Number of pages

25 p.

Reference

NF EN 12338

ICS Codes

13.060.50 Examination of water for chemical substances

Classification index

T90-113-3

Print number

1 - décembre 2002

European kinship

EN 12338:1998

Sumary

Water quality - Determination of mercury - Enrichment methods by amalgamation

Le présent document s'adresse aux laboratoires ayant à doser le mercure total, à de faibles concentrations dans les eaux.

Standard replaced by (1)

NF EN ISO 12846

June 2012

Standard Current

Water quality — Determination of mercury — Method using atomic absorption spectrometry (AAS) with and without enrichment

Table of contents

Avant-propos
3
0 Introduction
4
1 Domaine d'application
4
2 Références normatives
4
3 Interférences générales
5
4 Dosage du mercure après réduction avec le chlorure d'étain(II) et enrichissement par amalgame
6
4.1 Gamme de mesure
6
4.2 Principe
6
4.3 Interférences
6
4.4 Réactifs
6
4.5 Appareillage
8
4.6 Échantillonnage et prétraitement de l'échantillon
9
4.7 Méthode de digestion au permanganate peroxodisulfate
9
4.8 Mode opératoire
11
4.9 Calculs
12
4.10 Expression des résultats
12
4.11 Rapport d'essai
12
5 Dosage du mercure après réduction avec le tétrahydroborate de sodium et enrichissement par amalgame
13
5.1 Gamme de mesure
13
5.2 Principe
13
5.3 Interférences
13
5.4 Réactifs
13
5.5 Appareillage
14
5.6 Échantillonnage et prétraitement de l'échantillon
14
5.7 Méthode de digestion au permanganate peroxodisulfate
14
5.8 Mode opératoire
16
5.9 Calculs
16
5.10 Expression des résultats
16
5.11 Rapport d'essai
16
6 Données de fidélité
17
Annexe A (informative) Méthode de digestion par ultrasons
19
Annexe B (informative) Méthode de digestion avec un autoclave
20
Annexe C (informative) Méthode de digestion par micro-ondes
21
Annexe D (informative) Bibliographie
23

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