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• W2022259384 abstract "본 연구에서는 사료용 볏짚 중 잔류허용기준(MRL, Maximum Residues limits)이 설정된 etofenprox, tricyclazole, diazinon, edifenphos, propiconazole, carbaryl, carbofuran 7종과 carbofuran의 대사물질 3-hydroxy carbofuran, 3-keto carbofuran 2종을 포함하여 9성분의 볏짚 중 잔류 모니터링를 위한 분석법을 개발하고 국내 18개 지점의 볏짚을 분석하였다. 9종의 농약을 분석 가능한 기기조건에 따라 4개의 그룹으로 나누어 분석하였는데, HPLC-UVD로 분석이 가능한 농약 중 tricyclazole과 etofenprox를 첫 번째 그룹으로하고, propiconazole과 edifenphos를 두 번째 그룹으로 하였다. HPLC-FLD로 분석이 되는 carbaryl, carbofuran, 3-hydroxy carbofuran, 3-keto carbofuran을 세 번째 그룹으로 하였으며, GC-NPD로 분석이 되는 diazinon을 네 번째 그룹으로 하여 분석하였다. 시료 추출과정은 건조된 볏짚을 acetone으로 추출하고 dichloromethane으로 분배하는 방법으로 실시하였으며 정제과정은 첫 번째 그룹과 두 번째 그룹은 플로리실과 아미노-프로필 카트리지를 이중으로 연결하여 정제하였다. 세 번째 그룹은 아미노-프로필 카트리지로 정제하였고, 네 번째 그룹은 플로리실 카트리지로 정제하였다. 모든 성분의 정량한계는 잔류허용기준의 1/2수준 이하였고, 정량한계 수준을 포함한 회수율시험 결과 모두 70~110%를 만족하였으므로 볏짚 잔류농약 모니터링을 위한 분석법으로 적합한 것으로 나타났다. 2010년 한국 6지역에서 채취한 볏짚 18점의 잔류농약을 분석한 결과 1점에서 carbofuran의 대사물질인 3-keto carbofuran이 정량한계 수준인 0.04 mg/kg 검출되었으며 그 밖에 etofenprox, tricyclazole, diazinon, edifenphos, propiconazole, carbaryl 등 6성분은 모든 시료에서 정량한계 미만이었다. This study was conducted for the establishment of the analytical method of pesticide residues in rice straw for 9 pesticides; etofenprox, tricyclazole, diazinon, edifenphos, propiconazole, carbaryl, carbofuran, 3-hydroxy carbofuran and 3-keto carbofuran and for the monitoring of these pesticides in rice straw for livestock feed in Korea. These pesticides were classified into 4 groups according to analytical instrument condition. Group 1 (HPLC-UVD1) included tricyclazole and etofenprox while group 2 (HPLC-UVD2) included propiconazole and edifenphos. Group 3 (HPLC-FLD) included carbaryl, carbofuran, 3-hydroxy carbofuran and 3-keto carbofuran. Group 4 (GC-NPD) included Diazinon. The dried rice straw samples were extracted with acetone and purified by liquid-liquid partition and solid phase extraction (SPE): Combination of Florisil SPE and amino-propyl SPE was used for group 1 and group 2, amino-propyl SPE for group 3, and Florisil SPE was for group 4. Recovery was in the ranged 70~110% and the limits of quantitation (LOQ) were lower than the half of maximum residue limits. Therefore this method was proved to be efficient for monitoring of these pesticides residue in rice straw. A total of 18 rice straw samples from 6 provinces in Korea in 2010 were analyzed using established method and, only 3-keto carbofuran was detected in one sample at concentration of 0.04 mg/kg." @default.
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• W2022259384 date "2012-12-31" @default.
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• W2022259384 title "Analysis of Pesticide Residues in Rice Straw for Livestock Feed" @default.
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