This work describes a rapid and sensitive ion mobility spectrometry method for the determination of aflatoxins G 1 and G 2 (AFG 1 and AFG 2 ). The effective instrumental parameters were investigated and optimized. After optimizing, the calibration curves for AFG 1 and AFG 2 were linear in the range of 1 to 300 ng. Relative standard deviation was 8% and limit of detection was 0.5 ng. The capability of the proposed method was evaluated for the determination of AFG in spiked pistachio nut as a real sample that satisfactory results were obtained.Key words: Aflatoxin G (AFG), Aflatoxin B (AFB), Ion mobility spectrometry (IMS), Pistachio nut.Some reports indicate natural contamination with AFB and AFG mainly in countries with warm and humid climate [6][7][8] .
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