有机磷杀螺增效剂在不同土壤中的吸附作用  

Adsorption of Organophosphorus Molluscicide Synergists in Different Soils

作　　者：董玉瑛[1] 赵盈丽[1] 杨运[1] 张凤杰[1] 

机构地区：[1]大连民族学院环境与资源学院,辽宁大连116605

出　　处：《大连民族学院学报》2011年第5期433-438,共6页Journal of Dalian Nationalities University

基　　金：中央高校基本科研业务费专项资金资助项目(DC10030112);辽宁省教育厅高等学校科研项目计划(L2010100)

摘　　要：有机磷杀螺增效剂可对日本血吸虫中间宿主钉螺有杀灭增效作用,其进入环境后可被土壤或其他生物吸附,对生态系统具有潜在的危害。测定和比较了16种有机磷杀螺增效剂在东北黑土及安庆宿县黄棕壤2种土壤中的有机碳吸附系数(KOC),应用碎片分子连接性指数(FMCIs)和线性溶剂化能参数(LSERs)对其进行了定量结构-性质相关(QSPR)分析,得到了几组预测效果较好的模型。由FMCIs得到的方程,具有较好的相关性,应用LSERs得到的方程,具有较少的描述符,且描述符具有一定的物理意义,预测模型的建立可为该类化学品生态风险评价提供基础数据。Organophosphorus compounds studied in this paper have been invested as a synergist of molluscicide. They can be adsorbed by the soil or other organisms and be potentially harmful to the ecological system. The soil sorption coefficient （Koc） of 16 organophosphorus synergists of molluscicide in black soil and yellow - brown soil were determined and compared. The parameters of molecular fragment connectivity indices （MFCIs） and linear solvation energy relationships （LSERs） were used as molecular descriptors to establish a series of correlation equations. In comparison, the accuracy of MFCI model with greater correlation and smaller SE is better than that of the LSER model, while the latter has fewer variables and each descriptor has clear meaning. The obtained quantitative structure - property relationship （QSPR） models could be used to predict partitioning properties accurately in soils and provided basic data for similar compounds to assess their ecological risk.

关 键 词：有机磷杀螺增效剂 土壤有机碳吸附系数 定量结构-性质相关 

分 类 号：X131.3[环境科学与工程—环境科学]