期刊
JOURNAL OF CHROMATOGRAPHIC SCIENCE
卷 52, 期 10, 页码 1339-1345出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/chromsci/bmu003
关键词
-
资金
- FCT (Fundacao para a Ciencia e a Tecnologia) [BD/47200/2008]
- [PEst-C/EQB/LA0006/2011]
- Fundação para a Ciência e a Tecnologia [PEst-C/EQB/LA0006/2011] Funding Source: FCT
In this study, we sought to assess the applicability of GC-MS/MS for the identification and quantification of 36 pesticides in strawberry from integrated pest management (IPM) and organic farming (OF). Citrate versions of QuEChERS (quick, easy, cheap, effective, rugged and safe) using dispersive solid-phase extraction (d-SPE) and disposable pipette extraction (DPX) for cleanup were compared for pesticide extraction. For cleanup, a combination of MgSO4, primary secondary amine and C18 was used for both the versions. Significant differences were observed in recovery results between the two sample preparation versions (DPX and d-SPE). Overall, 86% of the pesticides achieved recoveries (three spiking levels 10, 50 and 200 mu g/kg) in the range of 70-120%, with <13% RSD. The matrix effects were also evaluated in both the versions and in strawberries from different crop types. Although not evidencing significant differences between the two methodologies were observed, however, the DPX cleanup proved to be a faster technique and easy to execute. The results indicate that QuEChERS with d-SPE and DPX and GC-MS/MS analysis achieved reliable quantification and identification of 36 pesticide residues in strawberries from OF and IPM.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据