[Determination of 28 organochlorine and synthetic pyrethroid pesticides in greasy wool using accelerated solvent extraction technique and gas chromatography].
A method for the simultaneous determination of 28 organochlorine and synthetic pyrethroid pesticides in greasy wool was developed by accelerated solvent extraction (ASE) coupled with gas chromatography-electron capture detection (GC-ECD). The organochlorine and synthetic pyrethroid pesticides in greasy wool were extracted with acetonitrile saturated with n-hexane at 80 degrees C, 10.34 MPa by ASE. The extract was pretreated by a series of procedures such as freezing-lipid filtration, concentration and purification by solid-phase extraction prior to the determination with GC-ECD. The linear ranges were 0.005-1.0 mg/L for 16 organochlorines, 0.02-4.0 mg/L for flumethrin and 0.01-2.0 mg/L for the others. There were good linear relationships between the peak area and concentration in the linear ranges. The average recoveries of 28 organochlorine and synthetic pyrethroid pesticides were 67.2%-107.7%, and the relative standard deviations were 2.6%-29.0%. The method is simple, sensitive and suitable for preliminary screening of organochlorine and synthetic pyrethroid pesticides in greasy wool.
Fan
Yuanmu
Y
Ningbo Entry-Exit Inspection and Quarantine Bureau, Ningbo 315012, China. fym1112@sina.com
Huang
Shaotang
S
Yu
Xuejun
X
Gu
Xiaojun
X
Qiu
Yajun
Y
Zhan
Jia
J
Chen
Shubing
S
He
Xiaoyu
X
Chen
Jun
J
Wang
Shijie
S
Li
Yaping
Y
Li
Zhongbang
Z