摘要
本文建立了固相萃取-气相色谱法同时检测土壤中甲胺磷、乐果、对硫磷、甲基对硫磷、丙溴磷和三唑磷残留的方法。6种有机磷农药的线性范围为10.0~300μg·L^(-1),线性相关系数均大于0.995,检出限在0.003~0.009μg·kg^(-1)之间,样品加标回收率在89.8%~106.7%之间,6次测试结果的相对标准偏差小于5%。该方法前处理操作简单,灵敏度高,具有良好的回收率和稳定性,适用于土壤中有机磷农药残留的测定。
A method for the simultaneous determination of methamidophos,dimethoate,parathion,methyl parathion,profenofos and Triazophos residues in soil by solid phase extraction gas chromatography was established.The linear range of six organophosphorus pesticides was 10.0~300μg·L^(-1),the linear correlation coefficient was greater than 0.995,the detection limit was between 0.003~0.009μg·kg^(-1),the recovery rate of sample spiked was between 89.8%~106.7%,and the relative standard deviation of six test results was less than 5%.The method has the advantages of simple pretreatment,high sensitivity,good recovery and stability.It is suitable for the determination of organophosphorus pesticide residues in soil.
作者
陈维
CHEN Wei(Changsha City Changsha County Ecological Environment Monitoring Station,Changsha410100,China)
出处
《化学工程师》
CAS
2023年第6期42-44,共3页
Chemical Engineer
关键词
固相萃取
气相色谱法
土壤
有机磷农药
残留
solid phase extraction
gas chromatography
soil
organophosphorus pesticides
residue
