摘要
建立了微波萃取土壤中艾氏剂、七氯、狄氏剂和异狄氏剂4有机氯农药,结合QuEChERS净化和气相色谱定量的分析方法。样品经丙酮-正己烷(V丙酮∶V正己烷=1∶1)提取,从线性、检出限、定量限和精密度等方面考察了方法的性能。4种有机氯的质量浓度在0.005~0.500μg/L范围内与峰面积呈良好的线性关系,相关系数均≥0.998,方法检出限为0.04~0.07μg/kg,样品加标回收率为90%~101%,测定结果的相对标准偏差为1.60%~5.60%(n=6)。该方法操作方便、快速,结果准确、可靠,试剂用量少,缩短了分析时间,适用于土壤中有机氯的测定。
The performance of this method was investigated in terms of linearity,detection limit,quantitative limit and precision.The soil sample was extracted by acetone-n-hexane(V acetone:V hexane=1∶1).The result showed that the calbration curves of the 4 kinds of organochlorine pesticides(Heptachlor,Aldrin,Dieldrin and Endrin)were linear in the range of 0.005-0.500μg/L,the correlation coefficients were above 0.998,the detection limits were 0.04-0.07μg/kg.Meanwhile,the recoveries were 90%-101%,and the RSDs were 1.60%-5.60%(n=6).This method is simple,rapid,accurate,reliable,and suitable for the determination of OCPs in soil.
作者
吴东峰
何伟忠
王成
Wu Dongfeng;He Weizhong;Wang Cheng(Xinjiang Uygur Autonomous Region Environmental Monitoring Station,Urumqi 830011,China;Institute of Agricultural Quality Standards and Testing Technology,Xinjiang Academy of Agricultural Sciences,Laboratory for Risk Assessment of Agricultural Product Quality and Safety,Ministry of Agriculture and Rural Areas(Urumqi),Urumqi 830091,China)
出处
《分析仪器》
CAS
2020年第1期39-43,共5页
Analytical Instrumentation
基金
新疆维吾尔自治区重点实验室开放课题-新疆特色林果质量安全关键危害因子风险评估(2015KL023)
现代农业产业技术体系项目(CARS-25)
新疆维吾尔自治区天山雪松计划(2017XS07)
自治区科技厅高技术研究发展计划项目-新疆特色果品中多种农药残留检测技术研究(201517106)。
关键词
微波萃取
QUECHERS
有机氯
气相色谱
土壤
Microwave assisted extraction(MAE)
QuEChERS
Organochlorine pesticides(OCPs)
Gas chromatography(GC)
Soil
