摘要
为了获得用于质量控制的速灭威纯品,先用硅胶层析法进行分离和提纯得到白色晶体,再用红外吸收光谱解析其结构,最后用GC-2014型岛津气相色谱仪和UV-2450型岛津紫外分光光度计测定提纯前后含量变化.经过精制后,速灭威纯度从96.0%提高到98.9%,且两种定量方法得到的结果一致.由此可知硅胶层析可以很好完成速灭威的精制,而气相色谱和紫外光谱的联合使用,可以互相印证所测含量准确性,方便简洁,可以推广使用于其他农药的纯度检测.
In order to get pure sample of Metolcarb used in quality control,silica gel column chromatography was applied to separate and purify Metolcarb,and white crystal samples were obtained.Infrared absorption spectrum was applied to identify Metolcarb＇s structural groups.The determination of purity was conducted using Shimadzu GC-2 014 and Shimadzu UV-2 450 ultraviolet spectrophotometer.The purity of Metolarb was improved from 96% to 98.6% through silica gel column chromatography.GC and UV got the same results.Silica gel column chromatography is a good tool to refine Metolcarb.Both UV absorption spectra and GC could determine the purity.The united usage of UV and GC could be extended to detect the purity of other pesticides.
出处
《武汉工程大学学报》
CAS
2011年第6期16-19,共4页
Journal of Wuhan Institute of Technology
基金
湖北省教育厅优秀中青年项目(Q20091509)
绿色化工过程省部共建教育部重点实验室开放研究基金
武汉工程大学大学生校长基金
关键词
速灭威
提纯
含量分析
metolcarb
purification
quality control
