Wang Y, Kee Lee H
Department of Chemistry, National University of Singapore, Singapore.
J Chromatogr A. 1998 Apr 17;803(1-2):219-25. doi: 10.1016/s0021-9673(97)01252-1.
A method is described which permits the trace analysis of 10 chlorobenzenes in aqueous samples. Chlorobenzenes were extracted from water samples by solid-phase extraction with a C18 cartridge and analysis was carried out by gas chromatography-mass spectrometry in the selected-ion monitoring mode. The recovery and precision of the method were evaluated by extraction of spiked reagent-grade water at concentration levels of 0.1, 1.0 and 10.0 micrograms/l. This method was applied to the determination of chlorobenzenes in tap, ground and river water. By preparing 200 ml of environmental water samples, the detection limits of the compounds studied were in the range of 0.010-0.042 microgram/l.
本文描述了一种可对水样中的10种氯苯进行痕量分析的方法。采用C18柱固相萃取法从水样中萃取氯苯，并用气相色谱 - 质谱联用仪在选择离子监测模式下进行分析。通过对浓度为0.1、1.0和10.0微克/升的加标试剂级水进行萃取，评估了该方法的回收率和精密度。该方法应用于自来水、地下水和河水中氯苯的测定。通过制备200毫升环境水样，所研究化合物的检测限在0.010 - 0.042微克/升范围内。
