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用一个紧的近红外光谱仪来解决蒸酒中甲醇问题的多功能方法
Celio Pasquini1, Maria C Hespanhol2
1Institute of Chemistry, State University of Campinas, Rua Monteiro Lobato, 290, 13083-862, Campinas, SP, Brazil.
Analytical methods : advancing methods and applications
|February 13, 2026
概括
一种新的,低成本的近红外光谱仪方法可以准确地检测蒸饮料中的有毒甲醇. 这种现场部署的技术有助于识别假冒饮料,并支持公共卫生安全.
科学领域:
- 分析化学 分析化学
- 频谱学是一种光谱学.
- 食品安全 食品安全
背景情况:
- 甲醇是一种有毒的酒精,由于发酵,造或伪造,酒精饮料中越来越多的有毒酒精.
- 需要准确的,可在现场部署的方法来检测蒸酒中的甲醇,以确保消费者安全并支持监管检查.
研究的目的:
- 开发和验证一种使用近红外光谱 (NIR) 测量蒸饮料中甲醇的新型直接分析方法.
- 评估该方法在各种烈酒和造燃料乙醇中检测甲醇的性能.
主要方法:
- 使用一个紧的,低成本的光谱相仪,在NIR的第三次外调区域 (1100-1280nm) 运行.
- 开发了本地和全球部分最小平方 (PLS) 回归模型,使用商业烈酒和燃料乙醇样本的光谱数据.
主要成果:
- 全球PLS模型在确定烈酒中的甲醇 (RMSEP = 0.17%) 和检测有害污染水平方面表现良好.
- 当地模型的准确性更高 (RMSECV = 0.12%),而全球模型的适用性更广泛.
- 该方法成功地检测和量化了造燃料乙醇中的甲醇 (RMSECV = 0.42%),这是假冒饮料中常见的剂.
结论:
- 一种具有成本效益的便携式NIR光谱仪方法为蒸饮料中的现场甲醇测定提供了可靠的工具.
- 这种技术可以帮助打击与甲醇污染的酒精饮料和假冒产品相关的公共卫生风险.
- 该方法能够分析饮料和造燃料乙醇,为在相关矩阵中检测甲醇提供了全面的解决方案.
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