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KMID : 1134820100390081165
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Journal of the Korean Society of Food Science and Nutrition
2010 Volume.39 No. 8 p.1165 ~ p.1170
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Analysis of Four Pesticides, Isoproturon, Phenmedipham, Pyridate and Nitenpyram Residues by High-Performance Liquid Chromatography with Diode-Array Detector
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Yang Sung-Yong
Koo Yun-Chang
Wang-Zeng
Heo Kyeong
Kim Hyeong-Kook
An Eun-Mi
Shin Han-Seung
Lee Jin-Won
Lee Kwang-Won
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Abstract
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A method for the determination of four pesticide compounds, urea (isoproturon), bis-carbamate (phenmedipham), thiocarbamate (pyridate) and vinyllidenediamine (nitenpyram) were examined and analyzed by HPLC with C-18 column (250 ㎜×4.6 ㎜, 5 ㎛ diameter particle size). Mobile phase consisted of deionized water, acetonitrile and 50 mM KH₂PO₄ (pH 2.5). Isoproturon and phenmedipham analytical condition was isocratic elution of the column with 50% solvent A (acetonitrile) and 50% solvent B (deionized water); pyridate was 85% solvent A (acetonitrile) and 15% solvent B (deionized water) at a flow rate of 1 mL/min; and nitenpyram analytical condition was 90% solvent A (50 mM KH₂PO₄, pH 2.5) and 10% solvent B (acetonitrile) at a flow rate of 1 mL/min. In results, retention times were 6.12, 8.63, 9.40 and 12.76 min for isoproturon, phenmedipham, pyridate and nitenpyram, respectively. All injection volumes were 10 μL and the limit of quantitation was 0.05 ㎎/㎏ for four pesticide compounds, respectively. Recovery rate test was performed with three farm products, rice, apple and soybean. Four pesticide compounds were spiked at concentrations of 0.05, 0.1 and 0.5 ㎎/㎏. The recovery rates were ranged from 70.18% to 118.08% and the standard deviations of all experiments were within 10%.
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KEYWORD
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pesticide, residue, analysis, HPLC, isoproturon, phenmedipham, pyridate, nitenpyram
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