两种染料与阿特拉津在沉积物上的竞争吸附  

Competitive adsorption between two kinds of dye compounds and atrazine on sediment

作　　者：陶庆会[1] 汤鸿霄[1] 

机构地区：[1]中国科学院生态环境研究中心环境水质学国家重点实验室,北京100085

出　　处：《中国环境科学》2004年第2期129-133,共5页China Environmental Science

基　　金：国家自然科学基金资助项目(20037010)

摘　　要：通过批量吸附实验研究了两种染料对阿特拉津(AT)在天然水体沉积物上吸附的影响.结果表明,与对照相比,刚果红(CR)和亚甲基蓝(MB)在实验浓度范围内均与AT发生竞争吸附,分别使AT的吸附率降低了14.29%和30.16%.共存体系的溶液化学条件发生变化时,AT的吸附有所不同.当体系pH值和温度升高时,AT的吸附量减小;而离子强度的升高,促使AT在沉积物上的吸附量增大.Through batch adsorption experiment, the effect of two kinds of dye compounds on the adsorption of atrazine (AT) on natural sediment was studied. In the range of experimental concentrations there existed the competitive adsorption between dyes and AT. Compared with free-dye system, Congo red (CR) and methylene blue (MB) decreased the adsorption percentage of AT 14.29% and 30.16%, respectively. The adsorption of AT was different a little, as the solution chemistry condition of the coexisting system changed. When the pH value and temperature of sediment/water system increased, the adsorption of AT decreased; but increased as the ionic strength increased.

关 键 词：阿特拉津 刚果红 亚甲基蓝 天然沉积物 吸附 

分 类 号：X524[环境科学与工程—环境工程]