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残留氯作用于XAD - 4树脂产生诱变假象。

Production of mutagenic artifacts by the action of residual chlorine on XAD-4 resin.

作者信息

Sweeney A G, Cheh A M

出版信息

J Chromatogr. 1985 May 29;325(1):95-102. doi: 10.1016/s0021-9673(00)96011-4.

DOI:10.1016/s0021-9673(00)96011-4
PMID:4019631
Abstract

XAD resins are commonly used to recover and concentrate organics from chlorinated water. It was found that the action of residual chlorine on XAD-4 resin produced mutagenic artifacts in a dose dependent manner. The production of mutagenic artifacts could be suppressed at least ten-fold by converting free chlorine to monochloramine. Kinetic studies of the reaction between free chlorine and XAD-4 resin showed a reaction rate dependence upon pH and chloride ion concentration that suggests participation of species besides hypochlorous acid.

摘要

XAD树脂通常用于从氯化水中回收和浓缩有机物。研究发现，残余氯对XAD - 4树脂的作用会以剂量依赖的方式产生诱变假象。通过将游离氯转化为一氯胺，诱变假象的产生至少可以被抑制10倍。游离氯与XAD - 4树脂之间反应的动力学研究表明，反应速率依赖于pH值和氯离子浓度，这表明除了次氯酸外还有其他物质参与反应。

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