ISO 23631:2006 水质 农药茅草枯, 三氯乙酸和选用的盐杆菌酸的测定-在流体液体萃取和衍生后采用气相色谱（GC-ECD 和/或GC-MS 监测）的方法

标准编号：ISO 23631:2006

中文名称：水质 农药茅草枯, 三氯乙酸和选用的盐杆菌酸的测定-在流体液体萃取和衍生后采用气相色谱（GC-ECD 和/或GC-MS 监测）的方法

英文名称：Water quality — Determination of dalapon, trichloroacetic acid and selected haloacetic acids — Method using gas chromatography (GC-ECD and/or GC-MS detection) after liquid-liquid extraction and deriva

发布日期：2006-02

标准范围

This International Standard specifies a method for the determination of dalapon, trichloroacetic acid (TCA) andselected haloacetic acids (see Table 1) in ground water and drinking water by gas chromatography (GC-ECDand/or GC-MS detection) after liquid-liquid-extraction and derivatization using diazomethane. Depending onthe matrix, the method is applicable to a concentration range from 0,5 μg/l to 10 μg/l. The validated reportinglimit of TCA and dalapon is about 0,05 μg/l (see Table C.1). Detection by electron-capture detector (ECD) ingeneral leads to lower detection limits. Detection by mass spectrometry (MS) allows analyte identification.This method may be applicable as well to compounds not mentioned in Table 1 or to other types of water.However, it is necessary to verify the applicability of this method for these special cases.

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