期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 57, 期 21, 页码 10095-10101出版社
AMER CHEMICAL SOC
DOI: 10.1021/jf902712v
关键词
QuEChERS; vegetable juice; pesticide residues; GC-MS-SIM; LC/ESI-MS/MS
资金
- National Research Foundation of Korea [핵09B3017] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
An analytical method has been developed for measuring 118 pesticides in vegetable juice. The extraction of pesticides was carried out based on dispersive solid-phase extraction, and determination was performed using gas chromatography with mass spectrometric detection (GC-MS-SIM) and liquid chromatography electrospray ionization tandem mass spectrometry (LC/ESI-MS/MS). Pesticides were confirmed by their retention time and their quantification and identification ions by GC-MS-SIM or multiple reaction monitoring of two fragment ions by LC/ESI-MS/MS, respectively, Spiking experiments from 10 to 120 mu g/kg were carried out to determine the recovery, precision, and limit of quantification (LOQ) of the method. The overall recoveries of all pesticides were between 77 and 114% with relative standard deviations lower than 14%. The LOQ for most compounds was below 5 mu g/kg. The proposed method was applied successfully for the residue determination of the 118 pesticides in commercial vegetable juice samples.
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