Fiber Optic Coupled Raman Based Detection of Hazardous Liquids Concealed in Commercial Products

M. L. Ramírez-Cedeño, Natalie Gaensbauer, Hilsamar Félix-Rivera, W. Ortiz-Rivera, L. Pacheco‐Londoño, S. Hernández‐Rivera
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引用次数: 17

Abstract

Raman spectroscopy has been widely proposed as a technique to nondestructively and noninvasively interrogate the contents of glass and plastic bottles. In this work, Raman spectroscopy is used in a concealed threat scenario where hazardous liquids have been intentionally mixed with common consumer products to mask its appearance or spectra. The hazardous liquids under consideration included the chemical warfare agent (CWA) simulant triethyl phosphate (TEP), hydrogen peroxide, and acetone as representative of toxic industrial compounds (TICs). Fiber optic coupled Raman spectroscopy (FOCRS) and partial least squares (PLS) algorithm analysis were used to quantify hydrogen peroxide in whiskey, acetone in perfume, and TEP in colored beverages. Spectral data was used to evaluate if the hazardous liquids can be successfully concealed in consumer products. Results demonstrated that FOC-RS systems were able to discriminate between nonhazardous consumer products and mixtures with hazardous materials at concentrations lower than 5%.
基于光纤耦合拉曼的商品中隐藏危险液体的检测
拉曼光谱作为一种无损、无创地检测玻璃瓶和塑料瓶内容物的技术已被广泛提出。在这项工作中,拉曼光谱用于隐藏威胁场景,其中危险液体被故意与普通消费品混合,以掩盖其外观或光谱。考虑中的危险液体包括化学战剂(CWA)模拟物磷酸三乙酯(TEP)、过氧化氢和丙酮,作为有毒工业化合物(tic)的代表。采用光纤耦合拉曼光谱(FOCRS)和偏最小二乘(PLS)算法分析,定量威士忌中的过氧化氢、香水中的丙酮和有色饮料中的TEP。光谱数据用于评估有害液体是否可以成功地隐藏在消费品中。结果表明,FOC-RS系统能够区分无害消费品和有害物质浓度低于5%的混合物。
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