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http://dx.doi.org/10.7585/kjps.2015.19.4.361

Residual Characteristics of Bistrifluron and Fluopicolide in Korean Cabbage for Establishing Pre-Harvest Residue Limit  

Lee, Dong Yeol (Divison of Applied Life Science(BK21 plus Program), Gyeongsang National University)
Jeong, Dong Kyu (Divison of Applied Life Science(BK21 plus Program), Gyeongsang National University)
Choi, Geun-Hyoung (Chemical Safety Division, National Institute of Agricultural Science, RDA)
Lee, Deuk-Yeong (Chemical Safety Division, National Institute of Agricultural Science, RDA)
Kang, Kyu Young (Divison of Applied Life Science(BK21 plus Program), Gyeongsang National University)
Kim, Jin Hyo (Institute of Agriculture and Life Science, Gyeongsang National University)
Publication Information
The Korean Journal of Pesticide Science / v.19, no.4, 2015 , pp. 361-369 More about this Journal
Abstract
This study investigated residual characteristics of bistrifluron and fluopicolide in Korean cabbage, and suggested the pre-harvest residue limits (PHRLs) based on their dissipation patterns and biological half-lives. The pesticides were sprayed on Korean cabbage in two different region under greenhouse conditions at the recommended dose, respectively. The samples for residue analysis were harvested at 0 (2 hr), 1, 2, 4, 6, 8 and 10 days after treatment, and analyzed by HPLC after clean-up with Florisil SPE. The limit of quantification (LOQ) was $0.03mg\;kg^{-1}$ for bistrifluron and fluopicolide, and the recoveries ranged from 87.2-110.6% with below 5% of RSD. The biological half-lives of field I and field II were 3.9 and 4.2 days for bistrifluron and 4.9 and 4.2 days for fluopicolide, respectively. The PHRL of bistrifluron and fluopicolide were recommended as 3.83 and $3.23mg\;kg^{-1}$ for 10 days before harvest, respectively.
Keywords
bistrifluron; fluopicolide; Korean cabbage; biological half-life; pre-harvest residue limit;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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