NF EN ISO 23631
Water quality - Determination of dalapon, trichloroacetic acid and selected haloacetic acids - Method using gas chromatography (GCD-ECD and/or GC-MS detection) after liquid-liquid extraction and derivatization
ISO 23631:2006 specifies a method for the determination of dalapon, trichloroacetic acid (TCA) and selected haloacetic acids in ground water and drinking water by gas chromatography (GC-ECD and/or GC-MS detection) after liquid-liquid-extraction and derivatization using diazomethane. Depending on the matrix, the method is applicable to a concentration range from 0,5 to 10 micrograms per litre. The validated reporting limit of TCA and dalapon is about 0,05 micrograms per litre. Detection by electron-capture detector (ECD) in general leads to lower detection limits. Detection by mass spectrometry (MS) allows analyte identification.
ISO 23631:2006 specifies a method for the determination of dalapon, trichloroacetic acid (TCA) and selected haloacetic acids in ground water and drinking water by gas chromatography (GC-ECD and/or GC-MS detection) after liquid-liquid-extraction and derivatization using diazomethane. Depending on the matrix, the method is applicable to a concentration range from 0,5 to 10 micrograms per litre. The validated reporting limit of TCA and dalapon is about 0,05 micrograms per litre. Detection by electron-capture detector (ECD) in general leads to lower detection limits. Detection by mass spectrometry (MS) allows analyte identification.
- Avant-proposiv
- Introductionv
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1 Domaine d'application1
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2 Références normatives2
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3 Principe2
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4 Interférences2
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5 Réactifs2
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6 Appareillage5
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7 Échantillonnage et prétraitement des échantillons7
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8 Mode opératoire7
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9 Étalonnage10
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10 Calculs13
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11 Expression des résultats14
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12 Rapport d'essai15
- Annexe A (informative) Exemples de chromatogrammes en phase gazeuse16
- Annexe B (informative) Spectres de masse du dalapon méthylé et d'acides haloacétiques19
- Annexe C (informative) Données de fidélité23
- Bibliographie24
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