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Copyright of Chinese Journal of Pesticide Science / Nongyaoxue Xuebao is the property of Chinese Journal of Pesticide Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Modern Medicine & Health is the property of Journal of Modern Medicine & Health and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Based on QuEChERS and ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), a method for simultaneous detection of 31 pesticide residues in Chinese chives was established. The Chinese chive samples were extracted by acetonitrile, cleaned-up by modified QuEChERS method and then analyzed by UPLC-MS/MS. Results showed that good linear relationship was obtained between the mass concentrations of 31 pesticides and the corresponding peak areas in the range of 0.5-100 μg/L with all of the correlation coefficients higher than 0.995, and the LOQs (limits of quantification) of the pesticides were all 0.01 mg/kg. The average recoveries of 31 pesticides ranged from 70%-102% at the spiking level of 0.01, 0.1 and 1 mg/kg with RSDs lower than 11% (n = 5). The method was rapid, simple, reliable, efficient, and low cost, and was suitable for simultaneous determination of 31 pesticide multi-residues in Chinese chives. [ABSTRACT FROM AUTHOR]