摘要
采用室内分析测定方法,研究了铜和邻苯二胺在水相以及高岭石和蒙脱石上的交互作用过程。结果表明,在纯水体系中邻苯二胺与铜发生了明显的络合反应,通过等摩尔法推导得出邻苯二胺与铜的络合系数为2,表观络合常数约在107数量级,且随酸度的变化而改变;邻苯二胺的存在降低了铜在高岭石上的吸附量;而在蒙脱石体系中,邻苯二胺的存在则增加了铜的吸附量,并随邻苯二胺浓度的增加这种作用更加明显。与此同时,邻苯二胺均降低了游离态铜在平衡溶液中的含量,而且铜的存在也相应降低了溶液中游离态邻苯二胺的浓度。该研究对于深入理解复杂体系中复合污染物之间交互作用过程具有一定的参考意义。
Interaction between copper and o- phenylenediamine in aqueous, kaolinite and montmorillonite was studied. The result showed that complexation reaction between copper and o- PD in aqueous occurred, and mole ratio between copper and o- PD was 0.5. Adsorption quantity of copper on kaolinite was deceased in the presence of o- PD, and so was for Cu2+ in solution. Adsorption quantity of copper on montmorillonite increased in the presence of o- PD, but free Cu2+ in aqueous solution was decreased.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2003年第6期656-659,共4页
Journal of Agro-Environment Science
基金
中国科学院知识创新项目(KZCX2-401)
南京土壤研究所所长基金项目
国家重点基础发展规划项目(2002CB410808)
