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处理有机溶剂中4,4′二溴联苯

, PP. 92-96

Keywords: 4,4′二溴联苯,uv/o3,降解

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Abstract:

采用紫外光(uv)、o3和uv/o3方法降解4,4′二溴联苯(4,4′dbb),考察了溶液ph、4,4′dbb初始质量浓度对降解效果的影响,探讨了降解机理,并采用gc/ms对降解产物进行了分析.结果表明:4,4′dbb的主要降解产物为4溴联苯和联苯;3种方法对4,4′dbb都可以达到一定的去除效果,uv/o3降解效果最好,05g/l4,4′dbb溶液uv/o3作用8h后4,4′dbb的去除率达到913%.动力学分析表明,4,4′dbb在正己烷中的光化学反应为准一级反应,是一个逐步脱溴的反应过程.

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