[Determination of twenty pesticide residues in Viscum coloratum by gas chromatography using cloud-point extraction].
OBJECTIVE
To establish a gas chromatography method for simultaneous determination of organochlorine and pyrethroid pesticide residues in Viscum coloratum by cloud-point extraction (CPE).


METHODS
Pesticides were extracted with the non-ionic surfactant Triton X-100. The apparatus was gas chromatography with electron capture detector and the separation was performed on an Hp-5 column. The pesticide residues were calculated by external standard method.


RESULTS
Good linear relation was obtained over the range of 5-500 microg L(-1) for organochlorine and 10-1,000 microg L(-1) for pyrethroid. The limits of detection was 1.5-7.5 microg kg(-1). The average recoveries of organochlorine and pyrethroid were 74.15% -111.6% with corresponding RSD of 4.0% -9.1%.


CONCLUSIONS
The sample and rapid method was applied to pesticide residues determination.
Zhang
Shuting
S
School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China. zstzwz-3@163.com
Chen
Xiaohui
X
Yu
Zhiguo
Z
Shen
Xu
X
Gou
Meng
M
Bi
Kaishun
K
D002849:Chromatography, Gas / Q000379:methods*; D057230:Limit of Detection; D017830:Octoxynol / Q000737:chemistry; D010573:Pesticide Residues / Q000032:analysis*; D010936:Plant Extracts / Q000032:analysis*; D028181:Viscum / Q000737:chemistry*
D010573:Pesticide Residues; D010936:Plant Extracts; D017830:Octoxynol