Department of Chemistry, The University of Memphis, Memphis, TN 38152, USA.
Anal Chim Acta. 2009 Nov 10;654(2):133-40. doi: 10.1016/j.aca.2009.09.021. Epub 2009 Sep 19.
A laboratory-built automated instrument is reported for on-line, near real-time monitoring of nine haloacetic acids species (HAA9) in drinking water. The device uses anion-exchange chromatography to separate the HAA9 species, followed by post-column reaction with nicotinamide in basic solution with fluorescence detection. Method detection limits for HAA9 species ranged from 0.6 to 10.1microgL(-1), mean % recovery values ranged from 58 to 161%, and % relative standard deviation ranged from 3.5 to 32% while operating within a factor of 2.5-5 of the method detection limit. The bias between the proposed method and United States Environmental Protection Agency Method 552.3 was measured during two separate on-line studies and using grab samples collected from different distribution systems. In general, the two methods showed good agreement with biases for HAA9 of less than 10microgL(-1).
据报道，一种实验室构建的自动化仪器可用于在线、实时监测饮用水中的九种卤乙酸（HAA9）。该仪器采用阴离子交换色谱法分离 HAA9 种类，然后在后柱与碱性溶液中的烟酰胺进行反应，并用荧光检测法进行检测。HAA9 种类的方法检测限范围为 0.6 至 10.1μg/L，平均回收率值范围为 58%至 161%，相对标准偏差范围为 3.5%至 32%，而检测限的 2.5 至 5 倍内运行。在两次独立的在线研究和从不同分配系统收集的随机样本中，对提议的方法和美国环保署方法 552.3 之间的偏差进行了测量。一般来说，这两种方法的偏差较小，HAA9 的偏差小于 10μg/L，表明它们具有良好的一致性。
