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파프리카 중 tetraconazde의 수입 농산물 잔류허용기준 설정
조일규 ( Ii Kyu Cho ),오영곤 ( Young Gon Oh ),무스픽 ( Musfiqur Rahman ),설재웅 ( Jae Ung Seol ),이동기 ( Dong-gi Lee ),김지명 ( Ji Myung Kim ),정윤수 ( Yun Soo Jeong ) 한국환경농학회 2020 한국환경농학회 학술대회집 Vol.2020 No.-
The import tolerance of tetraconazole in paprika was proposed using OECD Maximum Residue Limit (MRL) calculator after conducting three different field trials to promote export of it to Taiwan. Pre-harvest interval (PHI) of residual pattern and degradation dynamic of tetraconazole in paprika were determined using ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). Samples were extracted with acetonitrile and a mixture of salts and dilution was performed for purification. A six point matrix matched calibration curve was constructed which provided excellent linearity with coefficient of determination (R2) ≥ 0.999. The quantification limits were 0.001 mg/kg. The method was validated in quintuplicate at three different concentrations resulted acceptable recovery ranging from 89.9~104.6% with relative standard deviation (RSD) ≤ 1.2% among the three filed sites. The developed method was applied to the field treated sample harvested at different intervals. In PHI trial, the tetraconazole residues were ranged 0.28-0.99 mg/kg in the field site 1 (Hwasun), 0.44 ~ 0.97 mg/kg in the field site 2 (Jinju), and 0.15 ~ 0.51 mg/kg in the field site 3 (Nomwon). Whereas, in the degradation trial, the observed residues were 0.07 ~ 0.53 mg/kg in the field site 1 and 0.14 ~ 0.29 mg/kg in the field site 3, Consequently, the import tolerance of tetraconazole in paprika using OECD MRL calculator was proposed to 2.0 mg/kg, which is different as the MRL(1.0 mg/kg) for pimento established by Republic of Korea. In conclusion, the residue study supported to propose 2.0 mg/kg as a MRL of tetraconazole for paprika.