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来自有机染料的发光二极管诱导光,用于激发发射光光谱学,用于食品系统分析

Veselin Vladev^1,2, Mariya Brazkova³, Stefan Bozhkov¹

¹Department of Mathematics, Physics and Information Technologies, Faculty of Economics, University of Food Technologies, 26 Maritsa Blvd., 4002 Plovdiv, Bulgaria.

Foods (Basel, Switzerland)

|May 11, 2024

概括

有机染料可以作为激发发射矩阵 (EEM) 光光谱的宽带光源. 这种方法可以为分析食品系统提供可检测的信号,比如超处女橄油 (EVOO).

科学领域:

分析化学分析化学
频谱学是一种光谱学.
材料科学材料科学材料科学

背景情况:

激发发射矩阵 (EEM) 光光谱是一种强大的分析技术.
传统的宽带光源可能昂贵而复杂.
有机染料有潜力成为具有成本效益和多用途的光源.

研究的目的:

调查使用有机染料光作为EME光谱的宽带光源的可行性.
评估不同激发配置和信号采集方法的效率.
展示这种方法在分析现实世界样本中的应用.

主要方法:

使用高功率的365纳米发光二极管 (LED) 在乙醇中激发库马林1染料.
采用Czerny-Turner单色仪来调整发射的光的光谱.
研究了直接LED激发和光纤合LED激发.
包含硫酸 (BaSO ₄) 和聚乙醇 (PVA) 扩散反射器,以增强信号收集.
分析了特级初橄油 (EVOO),素6染料和烯 (一种多环芳化合物 - - PAH).

主要成果:

发光二极管诱导的光提供了足够的信号强度,尽管光路损失.
在单色仪的输出端获得可检测的光信号.
扩散反射器提高了激发和光信号收集效率.
对EVOO,素6和烯的检测取得了成功.

结论:

有机染料光,当被LED激发并通过单色调器进行光谱调节时,是EEM光谱学的可行的宽带光源.
该方法为分析包括食品在内的复杂样品提供了实用和高效的方法.
使用扩散反射器进一步提高了系统的性能,使其适用于各种分析应用.

关键词:

在CzernyTurner单色机上使用.这是EVOOO的意思.由LED引起的光.硫酸酸是一种硫酸.宽带光源是一个宽带光源.扩散反射器是分散的反射器.光学纤维是一种光学纤维.有机染料有机染料聚环芳香碳化合物聚环芳香碳化合物聚乙烯醇 (PVC) 是一种

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