部分有机物在长江底泥上的吸附-解吸行为研究  

Sorption-desorption Behavior of Selected Organics on Yangze River Sediment

作　　者：彭素芬[1] 张玲[1] 张爱茜[1] 吴海锁[2] 韩朔睽[1] 

机构地区：[1]污染控制与资源化研究国家重点实验室南京大学环境学院,江苏南京210093 [2]江苏省环境科学研究院,江苏南京210036

出　　处：《污染防治技术》2009年第2期18-19,112,共3页Pollution Control Technology

基　　金：国家自然科学基金资助项目(No.20277017)

摘　　要：研究了3-溴苯甲醛、2,4-二氯苯乙酮、2,4-二氯苯甲酸甲酯和2,6-二特丁基对苯醌,在长江南京段某一饮用水源地底泥上的吸附-解吸过程,结果表明,其吸附等温线符合H型方程,这些化合物的吸附属分配作用。解吸过程中的分配系数大于吸附过程中的分配系数,说明有机物从沉积物中的释放,存在明显的滞后效应。This paper described sorption - desorption behavior of precursor - related organics for strong mutagen MX, including 3 - bromobenzaldehyde, 2,4 - dichloroacetophenone, methyl 2,4 - dichloro - benzoate, and 2,6 - ditertbutyl - 1,4 - benzoquinone in water - sediment system. The sediment sampled from one of the Nanjing drinking water sources in Yangze River was used. The sorption isotherms of the compounds fits linear model, namely Hemy equation, which indicates that the sorption is a water - sediment partition behavior. Moreover, the observed difference in linear sorption coefficients between sorption and desorption is indicative of sorption hysteresis.

关 键 词：吸附 解吸 长江底泥 MX前驱物 

分 类 号：X703[环境科学与工程—环境工程]