Chrome Extension
WeChat Mini Program
Use on ChatGLM

气相色谱-电子轰击源质谱法测定茶叶中氟虫腈残留量

Chinese Journal of Analysis Laboratory(2014)

Cited 28|Views14
No score
Abstract
建立了茶叶中氟虫腈残留量快速测定的气相色谱-电子轰击源质谱法.茶叶中的氟虫腈用正己烷-丙酮(7:3,V/V)混合液提取,经石墨化碳黑固相萃取小柱净化后,用正己烷-丙酮(9:1,V/V)混合液洗脱,浓缩定容后,用气相色谱-电子轰击源质谱法测定,外标法定量.结果表明,目标物质在0.001~0.040 mg/L范围内的线性关系良好;空白样品在0.002~0.010 mg/L范围三水平加标回收实验的平均回收率在96.6%~114.2%之间,相对标准偏差(n=6)为2.9% ~4.4%;方法的定量限为0.001 mg/kg.该方法能满足茶叶中氟虫腈残留量0.002 mg/kg的检测要求.
More
Translated text
Key words
fipronil residues,tea,gc-eims
AI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined