β-环糊精及其衍生物对禾草灵溶解及水解性能的影响

β-环糊精及其衍生物对禾草灵溶解及水解性能的影响 Effects of β-Cyclodextrin and Its Derivatives on the Solubility and Hydrolysis of Herbicide Dicolofop-Methyl 蔡喜运 CAI Xi-yun~1 1 2 3 4 first-author 钟天翔 ZHONG Tian-xiang~1 1 2 3 4 王嵩峰 WANG Song-feng~2 1 2 3 4 刘维屏 LIU Wei-ping~1 1 2 3 4 浙江大学环境科学研究所 浙江大学环境科学研究所 Institue of Environment Science 3041~ Institue of Environment Science 3041~ 武汉大学资源与环境科学学院 武汉大学资源与环境科学学院 浙江大学环境科学研究所,浙江,杭州,310029 浙江大学环境科学研究所,浙江,杭州,310029 ,湖北,武汉,430072 ,湖北,武汉,430072 研究了环糊精（β CD）及4种环糊精的衍生物（CM β CD,2 HP β CD,Methyl β CD,2 OTS β CD）对禾草灵溶解及水解性能的影响.除2 OTS β CD外,其他4种环糊精都显著地增加了禾草灵的水溶性,尤其Methyl β CD,2 HP β CD表现出了良好的线性增溶效果.但禾草灵在选用的5种环糊精溶液里的相溶曲线分属不同的类型:Methyl β CD和2 HP β CD属于AL型,CM β CD属于AP型,β CD属于BS型,2 OTS β CD属于AN型.通过对禾草灵水解产物的测定,发现禾草灵被环糊精包合后能增加禾草灵的稳定性,并且环糊精的浓度与种类对禾草灵的溶解、水解性能具有一定的影响. In this paper, β-CD （CD）, CM-β-CD （CMCD）,2-HP-β-CD （HPCD）,partially methylated β-CD （MCD） and 2-OTS-β-CD （OTS-CD） were chosen to study how they influenced solubility and hydrolysis of the herbicide diclofop-methyl （DM）. The used cyclodextrins in the study remarkably improved the solubility of diclofop-methyl except OTS-CD. Particularly, the solubility was increased linearly in MCD or HPCD containing water. The phase solubility curves of diclofop-methyl in cyclodextrins-containing water were ascribed to be A L type （MCD and HPCD）, A P type （CMCD）, B S type （CD） and A N type （OTS-CD）, respectively. Data for the hydrolytical product diclofop and ratio of diclofop to dissolved diclofop-methyl further indicated that the inclusion complexes of diclofop-methyl and some cyclodextrins could both enhance the solubility and stability of the herbicide. Besides, the solubility and hydrolysis of DM were dependent on cyclodextrin concentrations and types. 禾草灵 环糊精 包合物 增溶 水解 diclofop-methyl cyclodextrins inclusion complexes solubility hydrolysis TQ457 国家自然科学基金资助项目（30270767）;国家杰出青年基金资助项目（20225721） 2004-06-01 2021-04-01 6