摘要
建立了超声波提取-固相萃取净化-气相色谱法测定土壤及玉米中莠去津残留量的测定方法。样品经乙腈超声波提取,Florisil固相萃取柱净化,氮磷检测器检测。莠去津在0.05,0.1,1.0 mg/kg的3个添加水平,平均回收率为76.3%～101.3%,相对标准偏差为2.3%～8.0%,方法的最小检出量为0.01 ng。
A method for the determination of atrazine residue in soil and maize had been developed.Samples were extracted by ultrasonic and cleaned up on a Florisil solid phase extraction column.Atrazine quantification was achieved by gas chromatography with an nitrogen phosphorus detector（GC-NPD）.Compared with the available standard method of GB/T 5009.132-2003,the pretreatment of the new method was easy,rapid,cheap and less solvent consumption.The recoveries of atrazine ranged from 76.3 % to 101.3 % at the spiking levels of 0.05,0.1 and 1.0 mg/kg with relative standard deviations from 2.3 % to 8.0 % and the detection limit of the method was 0.01 ng.
出处
《分析试验室》
CAS
CSCD
北大核心
2011年第7期75-78,共4页
Chinese Journal of Analysis Laboratory
基金
河南省杰出青年基金项目(084100410024)资助
关键词
莠去津
固相萃取
气相色谱-氮磷检测器
土壤
玉米
Atrazine
Solid phase extraction
Gas chromatography with a nitrogen phosphorus detector
Soil
Maize
