کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1186196 | 963427 | 2010 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Rapid determination of organophosphorous pesticides in leeks by gas chromatography–triple quadrupole mass spectrometry Rapid determination of organophosphorous pesticides in leeks by gas chromatography–triple quadrupole mass spectrometry](/preview/png/1186196.png)
A rapid multi-residue method was developed for the determination of 20 organophosphorous pesticide residues in leeks by gas chromatography coupled to triple quadrupole mass spectrometry (GC–QqQ-MS/MS). The method was based on the modified QuEChERS sample preparation method. After microwave pre-treatment, leek samples were extracted with acetonitrile containing acetic acid 0.1% and cleaned by dispersive solid phase extraction. The QqQ analyser acquired data in selected reaction monitoring (SRM) mode. Recoveries of 20 organophosphorous pesticides ranged from 81.0% to 109.4% with the relative standard deviations (RSD) below 10.4%. The limits of detection (LODs) were 0.07–1.5 μg/kg. The limits of quantitation (LOQs) ranged from 0.25 to 5 μg/kg. Ten leek samples were analysed for method application.
Journal: Food Chemistry - Volume 122, Issue 1, 1 September 2010, Pages 327–332