摘要
采用气相色谱法 ,测定水体中2甲4氯含量。方法为用乙醚提取水体中的2甲4氯 ,然后将提取液浓缩至1mL左右 ,甲酯化 ,用正己烷萃取 ,取正己烷层进行气相色谱测定。结果表明 ,本方法简便、快速 ,结果稳定 ,平均回收率为 (76.8±3.82) %。
The residue of herbicide 2-methyl-4-chlorophenoxyacetic acid ( MCPA ) in water was determined by gas chromatography (GC ). The residue of MCPA in water was extracted by ether, and then concentrated to ca. 1 mL. The residue was methylated, and re-extracted again with hexane and quantitatively determined by GC. The above method was simple, quick, and stable with recoveries of ( 76.8±3.82 )% obtained from spiked samples.
出处
《农业环境保护》
CSCD
2000年第3期171-172,175,共3页
Agro-Environmental Protection
