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基于红色发射的碳量子点 (CQD) 和简单的pH校正,在中国Baijiu精确的乙醇测定

Xin-He Duan¹, Yi Li², Hong-Wei Li¹

¹State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, No. 2699 Qianjin Street, Changchun 130012, PR China; Institute of Theoretical Chemistry, College of Chemistry, Jilin University, No. 2 Liutiao Road, Changchun 130023, PR China.

|July 10, 2023

概括

一种使用红色发射碳量子点 (PPD-CQD) 的新光方法准确地确定了Baijiu的乙醇. pH 校正可提高各种 Baijiu 类型和其他酒精饮料的准确性.

科学领域:

分析化学分析化学
材料科学材料科学材料科学

背景情况:

拜的质量控制需要精确的乙醇含量确定.
现有的方法可能会面临 Baijiu.等复杂矩阵的挑战.
碳量子点为传感应用提供独特的光发光特性.

研究的目的:

在Baijiu开发一种基于光的新方法,用于精确量化乙醇.
为此目的制造红色发射的碳量子点 (PPD-CQD).
在Baijiu分析中解决矩阵干扰问题.

主要方法:

基于p-phenylenediamine的碳量子点 (PPD-CQD) 的制造.
描述PPD-CQD对乙醇水溶液的光反应.
制定 pH 校正策略以减轻 Baijiu 矩阵效应.
在不同的Baijiu品种中验证该方法.

主要成果:

PPD-CQD对乙醇-水溶液 (20-80%体积%) 呈现出良好的线性反应.
一个简单的pH调整有效地纠正了在Baijiu样本中观察到的偏差.
开发的光方法证明了其适用于各种Baijiu风味.
该方法显示了分析其他酒精饮料的潜力.

结论:

使用PPD-CQDs建立了一个快速而准确的光方法来确定Baijiu的乙醇.
在复杂的样本中,pH校正策略提高了该方法的稳定性.
这种技术适用于各种中国白的质量控制,并且具有更广泛的应用.

关键词:

中国的 Baijiu 是一个乙醇的确定乙醇的确定红色排放的CQD是红色的.调整pH值的方法是调整pH值

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