Hautman D P, Bolyard M
Technology Application Inc., Cincinnati, OH 45268.
J Chromatogr. 1992 Jun 5;602(1-2):65-74. doi: 10.1016/0021-9673(92)80064-2.
The US Environmental Protection Agency is developing regulations for various drinking water disinfection by-products (DBPs). This effort involves developing analytical methods for the DBPs formed as a result of different disinfection treatments and collecting occurrence data for these species. Ion chromatography is one method being used to analyze drinking water samples for the following inorganic DBPs: chlorite, chlorate and bromate. These anions, however, are difficult to separate from common interfering anions of chloride, carbonate and nitrate. A method is therefore presented by which tetraborate/boric acid is used to separate these anions. Method detection limits of the order of 10 micrograms/l, using conductivity and UV detection were obtained. Stability studies of chlorite showing the effectiveness of ethylenediamine as a preservative and summary data for an occurrence of nitrite, nitrate and the DBP precursor bromide are presented.
美国环境保护局正在制定针对各种饮用水消毒副产物（DBP）的法规。这项工作包括开发用于分析不同消毒处理产生的DBP的分析方法，以及收集这些物质的出现数据。离子色谱法是用于分析饮用水样品中以下无机DBP的一种方法：亚氯酸盐、氯酸盐和溴酸盐。然而，这些阴离子很难与常见的干扰阴离子如氯离子、碳酸根离子和硝酸根离子分离。因此，本文提出了一种使用四硼酸盐/硼酸来分离这些阴离子的方法。使用电导检测和紫外检测获得了约10微克/升的方法检测限。给出了亚氯酸盐的稳定性研究，表明乙二胺作为防腐剂的有效性，以及亚硝酸盐、硝酸盐和DBP前体溴化物出现情况的汇总数据。
