衍生化-手性毛细管色谱分离和测定水中的2,4-滴丙酸  

Enantioseparation and Determination of Dichlorprop in Water by Derivatization Chiral Gas Chromatography

作　　者：文岳中[1] 蔡喜运[1] 马云[1] 刘维屏[1] 

机构地区：[1]浙江大学环境科学研究所,杭州310029

出　　处：《分析化学》2004年第11期1492-1494,共3页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金资助项目 (No .3 0 2 70 767)

摘　　要：建立了一种采用手性气相色谱分离、测定水中 2 ,4 滴丙酸 (DCPP)的分析方法。通过对样品的酯化处理降低了被测物的沸点 ,提高了其挥发性 ;利用手性气相色谱 ECD检测灵敏度高、量程宽的优点 ,实现了水中DCPP的手性分离、定量分析 ,平均回收率达 90 %。该方法安全、快速、准确 ,可用于水中 2 ,4 滴丙酸和 2 ,4 滴丙酸甲酯对映体定量分析。A method for enantioseparation and determination of dichlorprop ( DCPP) in water by chiral gas chromatography was established. Dichlorprop was methylated by diazomethane which was rapidly, safely generated and simultaneously react with DCPP. The derivative was injected into a chiral gas chromatography with beta-cyclodextrin capillary column and enantioseparated. The recovery was about 90%. Also this method can be applied to enantioseparation and determination of methylated dichlorprop in water.

关 键 词：手性气相色谱 2 4-滴丙酸 衍生化 对映体分离 2 4-滴丙酸甲酯 农药 除草剂 

分 类 号：O657.7[理学—分析化学]