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논문 기본 정보

자료유형
학술저널
저자정보
Lina Hem (전남대학교) Sathya Khay (전남대학교) Jeong-Heui Choi (전남대학교) E.D. Morgan (Keele University) A.M. Abd El-Aty (Cairo University) Jae-Han Shim (전남대학교)
저널정보
한국독성학회 Toxicological Research Toxicological Research Vol.26 No.2
발행연도
2010.6
수록면
149 - 155 (7page)

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초록· 키워드

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The pesticide trichlorfon is readily degraded under experimental conditions to dichlorvos. A method has therefore been developed by which residues of trichlorfon in milk are determined as dichlorvos, using gas chromatography with μ-electron capture detection. The identification of dichlorvos was confirmed by mass spectrometry. Milk was extracted with acetonitrile followed by centrifugation, freezing lipid filtration, and partitioning into dichloromethane. The residue after partitioning of dichloromethane was dissolved in ethyl acetate for gas chromatography. Recovery concentration was determined at 0.5, 1.0, and 2.0 of times the maximum permitted residue limits (MRLs) for trichlorfon in milk. The average recoveries (n = 6) ranged from 92.4 to 103.6%. The repeatability of the measurements was expressed as relative standard deviations (RSDs) ranging from 3.6%, to 6.7%. Limit of detection (LOD) and limit of quantification (LOQ) were 3.7 and 11.1 ㎍/l, respectively. The accuracy and precision (expressed as RSD) were estimated at concentrations from 25 to 250 ㎍/l. The intra- and inter-day accuracy (n = 6) ranged from 89.2% to 91% and 91.3% to 96.3%, respectively. The intra- and inter-day precisions were lower than 8%. The developed method was applied to determine trichlorfon in real samples collected from the seven major cities in the Republic of Korea. No residual trichlorfon was detected in any samples.

목차

INTRODUCTION
MATERIALS AND METHODS
RESULTS AND DISCUSSION
CONCLUSION
ACKNOWLEDGMENT
REFERENCES

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UCI(KEPA) : I410-ECN-0101-2010-513-002878627