Journal
CHROMATOGRAPHIA
Volume 72, Issue 11-12, Pages 1143-1148Publisher
SPRINGER HEIDELBERG
DOI: 10.1365/s10337-010-1773-9
Keywords
Gas chromatography-tandem mass spectrometry; Matrix solid-phase dispersion; Organic nitrogen-containing pesticides; Vegetables
Funding
- AQSIQ (The China's General Administration for Quality Supervision, Inspection and Quarantine) [2009IK164]
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A novel and simple method for determination of 15 organic nitrogen-containing pesticides in vegetables using matrix solid-phase dispersion (MSPD) coupled with gas chromatography tandem mass spectrometry (GC-MS-MS) has been developed. The efficiencies of different sorbents (florisil, silicone, neutral alumina) for the MSPD were compared. Mean recoveries of the method using neutral alumina varied from 73.26 to 111.83% with relative standard deviations of 0.79-15.33% in the concentration range of 0.01, 0.02 and 0.05 mg kg(-1). The limits of detection were typically in the 0.0007-0.0320 mg kg(-1) range, which were 10-100 times lower than the maximum residue levels established by the European Union. This method was applied to residue detection in vegetables, in which organic nitrogen-containing compounds were detected at low concentrations.
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