Simultaneous Determination of 34 Pesticide Residues in Vegetable Oil by QuEChERS-on-line Gel Permeation Chromatography-Gas Chromatography-Mass Spectrometry
10.11895/j.issn.0253-3820.131225
- VernacularTitle:QuEChERS-在线凝胶色谱-气相色谱-质谱法测定植物油中34种农药残留
- Author:
Hua RUAN
;
Weiguang RONG
;
Ninghui SONG
;
Wenliang JI
;
Hualiang LIU
;
Yongjian MA
- Publication Type:Journal Article
- Keywords:
QuEChERS;
Gel permeation chromatography-gas chromatography-mass spectrometry;
Vegetable oil;
Pesticide residues;
Fast screening
- From:
Chinese Journal of Analytical Chemistry
2014;(8):1110-1116
- CountryChina
- Language:Chinese
-
Abstract:
A method for the simultaneous determination of 34 pesticides in sunflower oil, soybean oil and corn oil was developed. The samples were extracted and purified by a modified QuEChERS method, and then the supernatant was analyzed by on-line gel permeation chromatography-gas chromatography-mass spectrometry ( GPC-GC-MS ) . The linear range was from 0 . 01 to 0 . 2 mg/L with a good correlation coefficients ( r≥0. 9913). The average recoveries of 31 pesticides (except p,p′-DDE, p,p′-DDD, p,p′-DDT. For detail, please reference to section 3 . 6 ) ranged from 70 . 3% to 115 . 4%, 69 . 5% to 112 . 6% and 70 . 2% to 116 . 1%spiked at 0. 05 μg/g and 0. 1 μg/g with the relative standard deviations (RSDs, n=6) less than 13. 3%, 13. 5% and 12. 1% in sunflower oil, soybean oil and corn oil samples, respectively. The LODs of this method ranged from 0. 0692 to 2. 28, 0. 0559 to 2. 01 and 0. 0584 to 2. 14μg/kg (S/N=3) in sunflower oil, soybean oil and corn oil samples respectively. The convenient operation and versatility of this method are suitable for the fast screening and detection of 34 pesticide residues in sunflower oil, soybean oil and corn oil.
