摘要
研究了杭州东苕溪、西湖、运河(杭州段)和嘉兴南湖4个不同水体的18个沉积物对对硝基苯酚的吸附作用及机理.结果表明,分配作用在沉积物吸附对硝基苯酚的过程中占主导地位,其等温吸附曲线呈线性,吸附系数K与有机碳含量foc呈显著正相关(r=0.983).同一来源的沉积物,有机碳标化的分配系数Koc大致为常数.阳离子交换容量CEC对沉积物吸附对硝基苯酚几乎没有影响.
The mechanisms of p-nitrophenol sorption into 18 sediments from four different water bodies are investigated in this paper. The results indicate that distribution plays a leading role in the process of sorption of p-nitrophenol into sediments; the sorption isotherms of p-nitrophenol are linear; the sorption coefficients are proportional to the organic carbon content of sediments (r=0.983); the distribution coefficients normalized by organic carbon content are almost constants for the sediments from same origin; and the cation exchange capacities of sediments have almost no influence to the sorption of p-nitrophenol.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2001年第4期297-300,共4页
China Environmental Science
基金
浙江省自然科学基金
青年科技人才培养专项资金资助项目(RC99032)
