摘要
通过静态吸附实验 ,探讨了氨基甲酸酯类农药涕灭威在水体悬浮颗粒物上的吸附规律 .实验表明 ,2 5± 1℃条件下 ,涕灭威在低浓度 (0 2～ 1 5mg/L)时 ,在颗粒物上的吸附符合Langmuir等温吸附 ;在 2 0～ 1 5mg/L用Freundlich吸附等温线描述更合理 ;在 2 0～ 2 0 0 0mg/L ,涕灭威的吸附既可以用线性等温方程式也可以用Fre undlich等温方程式来描述 .并研究了阴离子表面活性剂SDBS和非离子表面活性剂TWEEN60存在下涕灭威的吸附等温线 ,以及悬浮颗粒物浓度、腐殖酸、pH。
Batch adsorption experiments of carbamate pesticide aldicarb on suspended particulate matter(SPM) in water were carried out in this paper. The results showed that under 25±1℃, at the aldicarb concentration of 0 2琠 to 1 5 mg/L, the adsorption of aldicarb on SPM followed Langmuir isotherm. At the range of 2 0 to 15 mg/L, the adsorption followed Freundlich isotherm. And at high concentration of 20 to 2000 mg/L the adsorption can be described using both Freundlich and Linear isotherms. Factors such as SDBS, TWEEN60, concentration of SPM, humic substances, pH, salinity, and microorganism affecting the sorption behaviors were also studied.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2003年第2期87-91,共5页
Environmental Science
基金
国家自然科学基金资助项目 (2 9837170 )
