CHLORINATION BY-PRODUCTS OF AMINO-ACIDS IN NATURAL-WATERS
CHLORINATION BY-PRODUCTS OF AMINO-ACIDS IN NATURAL-WATERS
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DOI：
10.1021/es00153a006
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发表时间：
1986-11-01
影响因子：
11.4
通讯作者：
MILES, CJ
中科院分区：
文献类型：
--
作者：
TREHY, ML;YOST, RA;MILES, CJ
采用气相色谱/质谱法研究了酸性和中性pH下天冬氨酸、酪氨酸和色氨酸的氯化反应。串联质谱分析氯化酪氨酸为鉴定氯化中间体提供了额外的结构信息。氨基酸的主要副产物是二氯乙腈和氯醛。当pH值从7增加到8时，氯醛的生成明显增加，并且pH依赖性与所提出的反应途径一致。来自天然湖泊和废水处理厂的氯化水样被发现含有大量的氯醛和二氯乙腈。
The chlorination of aspartic acid, tyrosine, and tryptophan was studied at acidic and neutral pH by gas chromatography/mass spectrometry. Tandem mass spectrometric analysis of chlorinated tyrosine provided additional structural information necessary for the identification of the chlorination intermediates. The amino acids were found to form dichloroacetonitrile and chloral as major byproducts. The formation of chloral was found to significantly increase as the pH was raised from 7 to 8, and the pH dependence is consistent with the reaction pathways proposed. Chlorinated water samples from a natural lake and from a wastewater treatment plant were found to contain significant amounts of both chloral and dichloroacetonitrile.