- 相关推荐
Application of TLSER method in predicting the aqueous solubility and n-octanol/water partition coefficient of PCBs, PCDD
Abstract： The theoretical linear solvation energy relationship(TLSER) approach was adopted to predict the aqueous solubility and noctanol/water partition coefficient of three groups of environmentally important chemicals-polychlorinated biphenyls( PCBs), polychlorinated dibenzodioxins and dibenzofurans( PCDDs and PCDFs). For each compound, five quantum parameters were calculated using AMI semiempirical molecular orbital methods and used as structure descriptors: average molecular polarizability(α), energy of the lowest unoccupied molecular orbit( ELUMO ), energy of the highest occupied molecular orbit( EHOMO ), the most positive charge on a hydrogen atom ( q + ), and the most negative atomic partial charge( q_ ) in the solute molecule. Then standard independent variables in TLSER equation was extracted and two series of quantitative equations between these quantum parameters and aqueous solubility and n-octanol/water partition coefficient were obtained by stepwise multiple linear regression(MLR) method. The developed equations have both quite high accuracy and explicit meanings. And the cross-validation test illustrated the good predictive power and stability of the established models.The results showed that TLSER could be used as a promising approach in the estimation of partition and solubility properties ofmacromolecular chemicals, such as persistent organic pollutants. 作 者： HUANG Jun YU Gang ZHANG Zu-lin WANG Yi-Lei ZHU Wei-hua WU Guo-shi 作者单位： HUANG Jun,YU Gang,ZHANG Zu-lin(Department of Environmental Science and Engineering, POPs Research Center, Tsinghua University, Beijing 100084, China)WANG Yi-Lei,ZHU Wei-hua,WU Guo-shi(Department of Chemistry, Tsinghua University, Beijing 100084, China)
期 刊： 环境科学学报(英文版) ISTICSCI Journal： JOURNAL OF ENVIRONMENTAL SCIENCES 年，卷(期)： 2004, 16(1) 分类号： X132 Keywords： persistent organic pollutants( POPs) quantitative structure property relationship(QSPR) theoretical linear solvation energyrelationship ( TLSER ) polychlorinated biphenyls (PCBs) polychlorinated dibenzo- p-dioxins (PCDDs) polychlorinated dibenzofuran【Application of TLSER method in predi】相关文章：
The content of an application letter05-04
General Application Letter 求 职 信205-04
General Application Letter 求 职 信305-04