NF EN ISO 15681-1

May 2005

Standard Current

Water quality - Determination of orthophosphate and total phosphorus by flow analysis (FIA and CFA) - Part 1 : method by flow injection analysis (FIA)

ISO 15681-1:2003 specifies flow injection analysis (FIA) methods for the determination of orthophosphate in the mass concentration range from 0,01 mg/l to 1,0 mg/l (P), and total phosphorus by manual digestion in accordance with ISO 6878 for the mass concentration range from 0,1 mg/l to 10 mg/l (P). The range of application can be changed by varying the operating conditions. ISO 15681-1:2003 is applicable to various types of water (such as ground, drinking, surface, leachate and waste waters). This method is also applicable to the analysis of seawater, but with changes in sensitivity, by adaptation of the carrier and calibration solutions to the salinity of the samples.

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Main informations

Collections

National standards and national normative documents

Publication date

May 2005

Number of pages

31 p.

Reference

NF EN ISO 15681-1

ICS Codes

13.060.50 Examination of water for chemical substances

Classification index

T90-083-1

Print number

1 - 28/12/2007

International kinship

ISO 15681-1:2003

European kinship

EN ISO 15681-1:2004

Sumary

Water quality - Determination of orthophosphate and total phosphorus by flow analysis (FIA and CFA) - Part 1 : method by flow injection analysis (FIA)

ISO 15681-1:2003 is applicable to various types of water (such as ground, drinking, surface, leachate and waste waters).

This method is also applicable to the analysis of seawater, but with changes in sensitivity, by adaptation of the carrier and calibration solutions to the salinity of the samples.

Table of contents

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Avant-propos
iv
Introduction
v
1 Domaine d'application
1
2 Références normatives
1
3 Interférences
2
3.1 Interférences générales
2
3.2 Interférences sur le dosage du phosphore total
2
4 Principe
2
4.1 Dosage des orthophosphates
2
4.2 Phosphore total avec digestion manuelle
3
5 Réactifs
3
6 Appareillage
6
6.1 Analyse avec injection en flux (FIA)
6
6.2 Appareillage supplémentaire
7
6.3 Appareillage supplémentaire pour le dosage du phosphore total
7
7 Échantillonnage et préparation de l'échantillon
7
8 Mode opératoire
7
8.1 Préparation pour l'analyse
7
8.2 Contrôles des performances de l'instrument
8
8.3 Contrôle du réactif à blanc
8
8.4 Étalonnage
8
8.5 Vérification de l'efficacité de la digestion pour le dosage du phosphore total
9
8.6 Mesurage
9
8.7 Arrêt du dispositif
9
9 Calcul des résultats
9
10 Expression des résultats
10
11 Rapport d'essai
10
Annexe A (informative) Exemple de dispositif FIA
11
Annexe B (informative) Fidélité et exactitude
12
Annexe C (informative) Dosage des orthophosphates-P et du phosphore total par FIA, avec réduction par l'acide ascorbique
14
Annexe D (informative) Remplacement du sulfate d'hydrazine par le DEHA (N,N-diéthylhydroxylamine)
20
Bibliographie
21

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