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KMID : 1024520060150010085
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Journal of the Environmental Sciences
2006 Volume.15 No. 1 p.85 ~ p.94
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Development of Simultaneous Analysis for the Multi-residual Pesticides in the Ginseng Extract using Gas Chromatography
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Sin Yeong-Min
Lee Seon-Hwa
Son Yeong-Wook
Jeong Ji-Yoon
Jeong Seong-Wook
Park Heung-Jai
Kim Sung-Hun
Won Yeong-Jun
Lee Chang-Hee
Kim Woo-Seong
Hong Moo-Ki
Chae Kab-Ryong
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Abstract
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The simultaneous analysis of multi-residual pesticides was developed using a gas chromatography (GC) method. In this study, a simple and reliable methodology was improved to detect 154 kinds of pesticides in sinseng extract sample by using a liquid-liquid extraction procedure, open column chromagraphy and chromatographic analysis by CC electron capture detector (ECD) and GC nitrogen-phosphorus detector (NPD). The 154 kinds of pesticides were classified in 4 groups according to the chemical structure. The extraction of pesticides was experimented with acetone and dichloromethane/petroleum ether in order, and cleaned up via open column chromatography packed with florisil . The final extract was concentrated in a rotator evaporator at until dryness. Then the residue was redissolved to 2ml with acetone, and analyzed by GC-ECD and GC-NPD. The applied concentration of pesticides was over . The recovery tests were ranged from to with standard deviations between 0.3 and of the standard spiked to the ginseng extract sample (Group ). The limit of detection (LOD) ranged from 0.001 to (Group ). The 9 kinds of pesticides were not detected. The developed method was applied satisfactory to the determination of the 154 kinds of pesticides in the ginseng extract with good reproducibility and accuracy.
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KEYWORD
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Ginseng extract, Simultaneous analysis, Multi-residual pesticide, Gas chromatography
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