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Establishment of Analytical Method of Prochloraz in Cabbage, Apple, Mandarin, Pepper and Hulled rice with GC-ECD
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 Title & Authors
Establishment of Analytical Method of Prochloraz in Cabbage, Apple, Mandarin, Pepper and Hulled rice with GC-ECD
Lee, Eun-Mi; Lee, Hye-Ri; Riu, Myoung-Joo; Park, Hee-Won; Na, Ye-Rim; Song, Hyuk-Hwan; Keum, Young-Soo; Zhu, Youngzhe; Kim, Jeong-Han;
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Analytical method for prochloraz in cabbage, apple, pepper, mandarin, and hulled rice was established by conversion it to 2,4,6-trichlorophenol (TCP). Crop samples were extracted with acetonitrile, and partitioned with dichloromethane. The sample extracts were hydrolyzed with pyridine hydrochloride in a vial by heating for 1 hour, and analyzed with GC-ECD after partitioning with dichloromethane. Method quantification limit (MQL) of prochloraz was 0.01 mg/kg. Recoveries at 0.1 mg/kg level was 105-113% while at 0.5 mg/kg level was 82-87%. In both of the cases CV was less than 10%. Through this procedure soxhlet extraction and refluxing apparatus of conventional method were discarded and simple solvent extraction and small vial were successfully employed, resulting in simple, rapid, economic and more precise method.
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