磺酰脲类除草剂及其主要降解产物分配系数的测定与预测  

DETERMINATION AND PREDICTION OF PARTITION COEFFICIENT FOR SULFONYLUREAS AND THEIR MAIN DEGRADATION PRODUCTS

作　　者：韦丽萍[1] 冯建舫[1] 于红霞[1] 王连生[1] 

机构地区：[1]污染控制与资源利用国家重点实验室南京大学环境科学与工程系,南京210093

出　　处：《环境化学》1998年第5期457-461,共5页Environmental Chemistry

基　　金：国家自然科学基金资助

摘　　要：本文测定了甲黄隆、氯黄隆、苄嘧黄隆及其主要降解产物取代磺胺和取代氮杂环化合物的辛醇-水分配系数,研究了反相高效液相色谱(RP-HPLC)容量因子、分子连接性指数、Leo碎片常数与分配系数间的相关关系,从而建立了估算磺酰脲类除草剂及其降解产物的疏水性方程.The lgKow values of metsulfuron methyl, chlorsulfuron, bensulfuron methyl and their main degradation products were determined by shake-flask method. The capacity factors were determined by RP-HPLC with C18 colunn and methanol-water eluent. First order molecular connectivity indices (MCIs) and sums of Leo-molecular-part-constant were calculated for these compounds and used to describe their lgKow values. Results demonstrated that while the HPLC results. MCIs and sums of Leo-molecular-part-constant could be used to predict the lgKow for all of the compounds, the HPLC method was more accurate than MCIs methods, and easier than the Leo-molecular constant method.

关 键 词：辛醇 分配系数 磺酰脲类 除草剂 污染物质 降解 

分 类 号：X132[环境科学与工程—环境科学] X832.02