气相色谱-傅里叶变换红外光谱联用法测定白酒中3种醛类香料组分  

Analysis of Three Aldehydes Fragrances in White Spirit by GC-FTIR

作　　者：方智[1] 于刚[1] 周铮[1] 

机构地区：[1]四川出入境检验检疫局,成都610041

出　　处：《化学分析计量》2013年第2期57-59,共3页Chemical Analysis And Meterage

摘　　要：建立了气相色谱–红外光谱联用法测定白酒中乙醛、戊醛、异戊醛3种醛类挥发性香料成分的方法。白酒样品直接进样分析,在10～10000 mg/L范围内,3种醛类的色谱峰面积与质量浓度线性相关,相关系数大于0.998,方法的检出限为10 mg/L,加标回收率大于90%。利用各个组分的特征红外谱图,提高了分析定性和定量的准确性,特别是提高了对同分异构体的区分能力。A gas chromatography-fourier transform infrared spectroscopy （GC-FTIR） method for the determination of three aldehydes fragrances （acetaldehyde, valeraldehyde and 2-methylbutanal） in spirit was developed. The sample was injected directly and analyzed by GC-FTIR. The calibration curves showed good linearity in the concentration range of 10- 10 000 mg/L and the correlation coefficient was more than 0.998. The limit of detection was 10 mg/L, and the recoveries of spiked sample were more than 90%. The method can improve the accuracy of qualitative and quantitative analysis, especially the ability to distinguish isomers with characteristic IR spectra of various components.

关 键 词：气相色谱-红外光谱联用法 白酒 乙醛 戊醛 异戊醛 

分 类 号：O657.7[理学—分析化学]