【摘要】 实验研究了重金属和表面活性剂对阿特拉津在沉积物上吸附的影响.结果表明,Cu2+和Cd2+在低浓度时对阿特拉津吸附无影响或降低其吸附,高浓度时则能明显或轻微促进其吸附.在实验浓度范围内,与对照相比,表面活性剂十二烷基苯磺酸钠(SDBS)和十六烷基三甲基溴化铵(CTAB)抑制阿特拉津的吸附,而Span 20则在低浓度时(≤1mg·L-1)抑制阿特拉津的吸附,高浓度时(>1mg·L-1)促进其吸附.更多还原

【Abstract】 In this study, a series of experiments were carried out to determine the influences of heavy metals and surfactants on the sorption of atrazine in sediment. The results showed that Cu2+ did not affect the adsorption of atrazine while Cd2+ decreased atrazine adsorption at lower concentrations. However at higher concentrations, Cu2+ could greatly and Cd2+ could slightly enhance the adsorptive capacity of atrazine, respectively. Over the range of surfactant concentrations examined, SDBS and CTAB decreased the adsorption of atrazine in comparison with the surfactantfree system, while Span20 decreased the adsorption of atrazine at lower concentrations (≤1?mg·L-1) and enhanced adsorption at higher concentrations (>1?mg·L-1). 更多还原