比较了两种测定饮用水中卤乙酸和氯酚浓度的方法的准确度、精密度和检出限。这两种方法包括用甲基叔丁基醚对水样进行液-液萃取，对提取物进行重氮甲烷衍生，并通过气相色谱（GC）和电子捕获检测进行分析。美国环境保护署开发的方法552和南加州大都会水区开发的微萃取方法给出了本研究中检测的强化试剂水和饮用水样本的可比精度和方法检测限。 微萃取法在常规应用中提供了更高的准确性，因为使用了GC校准的程序标准。由于微萃取法的劳动强度也较小，因此在大多数饮用水应用中，微萃取法是首选方法。包括16个参考文献和表格。

A comparison of the accuracy, precision, and detection limits of two methods for determining the concentrations of haloacetic acids and chlorophenols in drinking water is presented. Both methods consist of liquid-liquid extraction of the water sample with methyl-tertiary-butyl ether, diazomethane derivatization of the extracts, and analysis by gas chromatography (GC) with electron capture detection. Method 552, developed by the US Environmental Protection Agency, and a microextraction method, developed by the Metropolitan Water District of Southern California, gave comparable precision and method detection limits in fortified reagent water and the drinking water samples examined in this study. The microextraction method provided greater accuracy in routine applications because of the use of procedural standards for GC calibration. Because the microextraction method is also less labor-intensive, it is preferred in most drinking water applications. Includes 16 references, tables.