Objective This study aims to accurately quantify two key components in Baijiu(Chinese liquor)production and quality control:acetic acid and hexanoic acid.Methods A direct injection-gas chromatography(GC)technique was used for the rapid and precise simultaneous determination of acetic acid and hexanoic acid in Baijiu.Results Using this method,the detection limit for acetic acid reached 0.012 g/L and for hexanoic acid,0.0050 g/L.All correlation coefficients exceeded 0.999.The relative standard deviations(RSD)were 0.32％for acetic acid and 0.33％for hexanoic acid,with spiked recovery rates of 96.15％for acetic acid and 96.69％for hexanoic acid,respectively.Conclusion The new detection method proposed in this study not only overcomes the limitations of traditional detection methods and gas chromatography in many aspects but also demonstrates high efficiency,sensitivity,and excellent selectivity.This method has significant practical implications for improving the production process of Baijiu,ensuring the consistency of product flavor,and safety.
gas chromatographyacetic acidhexanoic acidChinese liquorquantitative analysis
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