NF EN ISO 15681-1
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.
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.
- Avant-proposiv
- Introductionv
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1 Domaine d'application1
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2 Références normatives1
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3 Interférences2
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3.1 Interférences générales2
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3.2 Interférences sur le dosage du phosphore total2
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4 Principe2
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4.1 Dosage des orthophosphates2
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4.2 Phosphore total avec digestion manuelle3
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5 Réactifs3
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6 Appareillage6
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6.1 Analyse avec injection en flux (FIA)6
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6.2 Appareillage supplémentaire7
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6.3 Appareillage supplémentaire pour le dosage du phosphore total7
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7 Échantillonnage et préparation de l'échantillon7
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8 Mode opératoire7
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8.1 Préparation pour l'analyse7
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8.2 Contrôles des performances de l'instrument8
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8.3 Contrôle du réactif à blanc8
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8.4 Étalonnage8
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8.5 Vérification de l'efficacité de la digestion pour le dosage du phosphore total9
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8.6 Mesurage9
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8.7 Arrêt du dispositif9
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9 Calcul des résultats9
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10 Expression des résultats10
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11 Rapport d'essai10
- Annexe A (informative) Exemple de dispositif FIA11
- Annexe B (informative) Fidélité et exactitude12
- Annexe C (informative) Dosage des orthophosphates-P et du phosphore total par FIA, avec réduction par l'acide ascorbique14
- Annexe D (informative) Remplacement du sulfate d'hydrazine par le DEHA (N,N-diéthylhydroxylamine)20
- Bibliographie21
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