摘要
为了快速检测烟田土壤中"敌稗"、"砜嘧磺隆"和"喹禾灵"3种除草剂的残留,建立了采用乙腈提取,弗罗里硅土固相萃取小柱净化,气相色谱法同时测定土壤中这3种除草剂残留量的方法,并采用该方法测定了郴州烟区10个土壤样品中这3种除草剂的残留量。结果显示:①3种除草剂的回收率为77.13%~105.64%,相对标准偏差5.50%~10.54%,检测限为0.01 mg/kg;②10个土壤样品中,3个样品检出"敌稗",检出率30%;3个样品检出"砜嘧磺隆",检出率30%;5个样品检出"喹禾灵",检出率50%;1个样品中同时检出"砜嘧磺隆"和"喹禾灵",检出率10%;③3种除草剂的残留量为0.027~0.433 mg/kg。
A method for simultaneous and rapid determination of the residues of Propanil,Rimsulfuron and Quizalofop-p-ethyl in tobacco soil was developed,in which samples were extracted with acetonitrile,cleaned up by solid phase extraction with a Florisil cartridge and determined by gas chromatography.Ten soil samples from Chenzhou were tested.The results showed that the recoveries of the three herbicides ranged from 77.13% to 105.64% with the relative standard deviations from 5.50% to 10.54% at the limit of detection of 0.01 mg/kg.The detection rates of Propanil,Rimsulfuron and Quizalofop-p-ethyl were 30%,30% and 50%,respectively;and Rimsulfuron and Quizalofop-p-ethyl were detectable in one sample. The residues of the three herbicides in the samples were in the range of 0.027 to 0.433 mg/kg.
出处
《烟草科技》
EI
CAS
北大核心
2010年第12期43-45,56,共4页
Tobacco Science & Technology
基金
湖南省烟草公司科技基金资助项目"烟田除草剂药害发生原因分析及治理对策研究"(10-12Aa02)
郴州市烟草公司科技基金资助项目"无公害烟叶生产关键技术研究与示范"(CZYC2009002)
关键词
气相色谱法
固相萃取
除草剂
烟田
土壤
Gas chromatography(GC)
Solid-phase extraction
Herbicide
Tobacco field
Soil