标准摘要
[中文适用范围]： 本标准规定了采用液相色谱法（GC-ECD和/或GC-MS检测）测定地下水和饮用水中达拉彭、三氯乙酸（TCA）和选定卤代乙酸（见表1）的方法。 使用重氮甲烷进行液体萃取和衍生化。 根据基质的不同，该方法适用的浓度范围为 0.5 µg/l 至 10 µg/l。 TCA 和 Dalapon 的经验证报告限值约为 0.05 µg/l（见表 C.1）。 电子捕获检测器 (ECD) 检测通常会导致较低的检测限。 通过质谱 (MS) 检测可以识别分析物。 该方法也适用于表 1 中未提及的化合物或其他类型的水。 然而，有必要验证该方法对于这些特殊情况的适用性。 [外文原描述]： 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.
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 derivatization