期刊
JOURNAL OF SEPARATION SCIENCE
卷 39, 期 22, 页码 4391-4397出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201600498
关键词
Carbamate pesticides; Fruit juice; Graphene; Pipette tip solid-phase extraction; Ultra-high performance liquid chromatography
资金
- Natural Science Foundation of Hebei Province China [B2013201234]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry of China
Graphene-based pipette tip solid-phase extraction was combined with ultra-high performance liquid chromatography and tandem mass spectrometry for the determination of carbamate pesticide residues in fruit juice samples. Four milligrams of graphene was used as sorbent material to pack a 1000 mu L pipette tip for the extraction of pirimicarb, propoxur, isoprocarb, fenobucarb, and diethofencarb from 3 mL of fruit juice sample. The whole extraction process was finished in 12 min, and the volume of eluent used was only 1.5 mL. Under the optimized conditions, good linear relationship (R > 0.999) and lower limits of detection (0.0022-0.033 ng/mL) were achieved. The recoveries at three spiked levels ranged from 80.90 to 124.60% with relative standard deviations less than 4.88%. Compared with commercially available sorbents including propylsulfonic acid silica, graphitized carbon black, and C-18, graphene was superior in extraction efficiency. The proposed method is simple, rapid, sensitive, selective, and solvent saving.
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