케일 중 살충제 Chromafenozide와 Pyridalyl의 잔류 특성 (The Residual Characteristic of Chromafenozide and Pyridalyl in Kale)

서지정보

· 발행기관 : 한국환경농학회
· 수록지 정보 : 한국환경농학회지 / 41권 / 2호 / 125 ~ 134페이지
· 저자명 : 선정훈, 황규원, 정경수, 이태현, 김현진, 박상정, 문준관

초록

BACKGROUND: It is a very important task to block dis-tribution of the agricultural products contaminated with pesticides in advance to protect consumers from residual pesticides among the agricultural products. Therefore, this study was performed to determine residual character-istics of pesticides in time-dependent manner and present scientific evidences for pre-harvest residue limit (PHRL) setting.
METHODS AND RESULTS: The tested pesticides, chro-mafenozide and pyridalyl were sprayed onto the kale twice (seven day intervals) and then the plant samples were collected at 0 (after 3 hours), 1, 2, 3, 5, 7, and 10 days after the last spraying. Residual concentration of chroma-fenozide in kale decreased with 74.9% (of decreased frac-tion, field 1) and 85.3% (field 2) and pyridalyl decreased with 81.2% (field 1) and 85.8% (field 2), calculated by comparisons of the concentrations at 0 day and 10 days. Also biological half-lives of chromafenozide in kale were 5.6 day (field 1) and 3.4 day (field 2), and those of pyr-idalyl were 4.3 day (field 1) and 3.5 day (field 2). CONCLUSION(S): If the residues of chromafenozide and pyridalyl in kale from 10 days before harvest are less than 37.6 mg/kg and 58.9 mg/kg, respectively, it is expected that safe kale below MRL can be supplied on the pre-harvest day.

영어초록

BACKGROUND: It is a very important task to block dis-tribution of the agricultural products contaminated with pesticides in advance to protect consumers from residual pesticides among the agricultural products. Therefore, this study was performed to determine residual character-istics of pesticides in time-dependent manner and present scientific evidences for pre-harvest residue limit (PHRL) setting.
METHODS AND RESULTS: The tested pesticides, chro-mafenozide and pyridalyl were sprayed onto the kale twice (seven day intervals) and then the plant samples were collected at 0 (after 3 hours), 1, 2, 3, 5, 7, and 10 days after the last spraying. Residual concentration of chroma-fenozide in kale decreased with 74.9% (of decreased frac-tion, field 1) and 85.3% (field 2) and pyridalyl decreased with 81.2% (field 1) and 85.8% (field 2), calculated by comparisons of the concentrations at 0 day and 10 days. Also biological half-lives of chromafenozide in kale were 5.6 day (field 1) and 3.4 day (field 2), and those of pyr-idalyl were 4.3 day (field 1) and 3.5 day (field 2). CONCLUSION(S): If the residues of chromafenozide and pyridalyl in kale from 10 days before harvest are less than 37.6 mg/kg and 58.9 mg/kg, respectively, it is expected that safe kale below MRL can be supplied on the pre-harvest day.

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