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使用衰减全反射光谱法对酒精饮料中的酒精、糖和酒石酸进行定量分析。

Quantitative analysis of alcohol, sugar, and tartaric Acid in alcoholic beverages using attenuated total reflectance spectroscopy.

作者信息

Nagarajan R, Gupta A, Mehrotra R, Bajaj M M

机构信息

Optical Radiation Standards National Physical Laboratory K. S. Krishnan Road New Delhi 110012 India.

出版信息

J Autom Methods Manag Chem. 2006;2006:45102. doi: 10.1155/JAMMC/2006/45102.

DOI:10.1155/JAMMC/2006/45102

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC1903462/

Abstract

Mid-infrared (MIR) spectroscopy in attenuated total reflectance (ATR) mode was used for quantifying ethanol, sucrose, and tartaric acid in alcoholic beverages. One hundred synthetic samples were prepared with different ethanol, sucrose, and tartaric acid concentrations. Experiments were carried out on Bio-Rad 175 C FTS using an ATR accessory. Spectra were recorded in the wavelength region 600-4000 cm-1. Calibration was performed using partial least squares (PLS) algorithm. Commercially available alcoholic beverages (gin, rum, vodka, etc.) were experimented and concentration of ethanol in these samples was predicted using the developed calibration model. Chemical analysis of these commercial samples was carried out in order to compare the results. The agreement between ATR results with those of chemical analysis revealed good reliability and repeatability of the technique used.

摘要

采用衰减全反射（ATR）模式的中红外（MIR）光谱法对酒精饮料中的乙醇、蔗糖和酒石酸进行定量分析。制备了100个具有不同乙醇、蔗糖和酒石酸浓度的合成样品。使用ATR附件在伯乐175 C傅里叶变换光谱仪上进行实验。在600 - 4000 cm-1波长范围内记录光谱。使用偏最小二乘法（PLS）算法进行校准。对市售酒精饮料（杜松子酒、朗姆酒、伏特加等）进行实验，并使用所建立的校准模型预测这些样品中乙醇的浓度。对这些商业样品进行化学分析以比较结果。ATR结果与化学分析结果之间的一致性表明所采用技术具有良好的可靠性和重复性。