Journal
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
Volume 34, Issue 3, Pages 917-921Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.5012/bkcs.2013.34.3.917
Keywords
Propisochlor; UPLC-MS/MS; Rice; Soil; Water
Categories
Funding
- Nature Science Foundation of China (NSFC) [31000863, 31171879]
- National Basic Research Program of China [2009CB119000]
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A simple, quick and reliable analytical method for the confirmation and quantification of propisochlor was developed. The propisochlor was extracted from water, soil and rice (stalks, rice and hull) matrices using acetonitrile, and cleaned up with primary secondary amine and determined by UPLC-MS/MS. The LODs of propisochlor ranged from 0.03 mu g/kg to 0.12 mu g/kg, while the LOQs ranged from 0.1 mu g/kg to 0.4 mu g/kg in different matrixes. The mean recoveries of propisochlor at three levels (0.005, 0.01 and 0.05 mg/kg) were in the range of 73.7-94.9% with intra-day relative standard deviations (RSD) of 1.1-13.9% and inter-day RSDR of 3.3-12.7%. This method is suitable for routine analysis of propisochlor under field conditions. The half-lives of propisochlor in rice stalks, water and soil were 1.7, 1.5 and 2.3 days in Hunan, 5.7, 1.0 and 1.9 days in Anhui and 4.8, 1.0 and 3.1 days in Guangxi.
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