2,4-滴丁酯原药及其杂质GC-MS分析研究  

Analytical Method for 2,4-D Butylate and its Impurities in Technical Material by GC/MS

作　　者：黄修柱[1] 季颖[1] 

机构地区：[1]农业部农药检定所,北京100026

出　　处：《农药科学与管理》2005年第8期3-7,共5页Pesticide Science and Administration

摘　　要：本文采用气相色谱-质谱联用法对2,4-滴丁酯原药进行分离鉴定,得到2,4-滴丁酯及其10个杂质质谱图,分析这些质谱图,推断出各自的结构;并总结2,4-滴丁酯质谱裂解规律及10个杂质的质谱特征,指导2,4-滴类化合物常规分析和残留分析。本文还对某企业的2,4-滴丁酯原药的杂质进行了定量分析,实验结果证明,行业标准中所限制的游离酚质量分数符合要求。2,4-D Butylate is an important herbicide in China.According to some toxicologic or phytotoxic problems, impurities had been taken into consideration for the safety assessment of pesticides.In this article, a gas chromatography-mass spectrometry method, using DB-L column （30m×0.32mm×0.25μm）, taking program temperature was developed to separate and analyze 2,4-D Butyl.ate and 10 impurities in technical material.Using electron impact （EI） method, 2,4- D Butyiatc and 10 impurities were, idcntified and confirmed.The way of dissociation of 2,4-D Butylate was discussed.Using GC-FID method, the content of 2,4-D Butylate and 10 impurities were measured.

关 键 词：2 4-滴丁酯 杂质 气质联用 质谱裂解 

分 类 号：TQ457[化学工程—农药化工]