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Citation: LING Aru, GUO Wenbo, YANG Junhua, ZHAO Zhihui, GUO Jinli. Simultaneous determination of six aflatoxins and sterigmatocystin in livestock and poultry tissues by QuEChERS-ultra high performance liquid chromatography-tandem mass spectrometry[J]. Chinese Journal of Chromatography, ;2018, 36(5): 439-445. doi: 10.3724/SP.J.1123.2017.11028 shu

Simultaneous determination of six aflatoxins and sterigmatocystin in livestock and poultry tissues by QuEChERS-ultra high performance liquid chromatography-tandem mass spectrometry

Institute for Agri-Food Standards and Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China

Received Date: 22 November 2017

Fund Project: Shanghai Natural Science Foundation (No. 17ZR1418800)

A method for the simultaneous determination of six aflatoxins (AFTs) and sterigmatocystin (SMC) in livestock and poultry tissues by QuEChERS-ultra high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) was developed and validated. The samples were extracted with 10 mL acetonitrile-water (84:16, v/v) after enzymatic hydrolysis with 20 μL β-glucosidase. The extracts were cleaned with 1.0 g each of sodium chloride and anhydrous magnesium sulfate, and then degreased with 5 mL hexane. The residues were re-dissolved in 1 mL acetonitrile-water (80:20, v/v) containing 5 mmol/L ammonium acetate. Methanol and 5 mmol/L ammonium acetate were used as the mobile phases. Six AFTs and SMC were analyzed by multiple reaction monitoring in the positive ion mode. Matrix-matched calibration curves and external standards were used for the accurate quantification of the six AFTs and SMC. Good linear relationships were obtained, the correlation coefficients (R²) were greater than 0.99. The limits of detection (LODs, S/N=3) and the limits of quantification (LOQs, S/N=10) ranged from 0.007 to 0.30 μg/kg, and 0.02 to 0.91 μg/kg, respectively. The recoveries at different spiked levels were satisfactory, and ranged from 77.3% to 118.5%. This method is simple, easy and sensitive, and is suitable for the rapid determination of the six AFTs and SMC in different pork, pork liver and chicken samples.
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