Pocket-size near-infrared spectrometer for narcotic materials identification

Christopher G. Pederson; Donald M. Friedrich; Chang Hsiung; Marc von Gunten; Nada A. O'Brien; Henk-Jan Ramaker; Eric van Sprang; Menno Dreischor

doi:10.1117/12.2050019

21 May 2014 Pocket-size near-infrared spectrometer for narcotic materials identification

Christopher G. Pederson, Donald M. Friedrich, Chang Hsiung, Marc von Gunten, Nada A. O'Brien, Henk-Jan Ramaker, Eric van Sprang, Menno Dreischor

Author Affiliations +

Proceedings Volume 9101, Next-Generation Spectroscopic Technologies VII; 91010O (2014) https://doi.org/10.1117/12.2050019
Event: SPIE Sensing Technology + Applications, 2014, Baltimore, MD, United States

Abstract

While significant progress has been made towards the miniaturization of Raman, mid-infrared (IR), and near-infrared (NIR) spectrometers for homeland security and law enforcement applications, there remains continued interest in pushing the technology envelope for smaller, lower cost, and easier to use analyzers. In this paper, we report on the use of the MicroNIR Spectrometer, an ultra-compact, handheld near infrared (NIR) spectrometer, the, that weighs less than 60 grams and measures < 50mm in diameter for the classification of 140 different substances most of which are controlled substances (such as cocaine, heroin, oxycodone, diazepam), as well as synthetic cathinones (also known as bath salts), and synthetic cannabinoids. A library of the materials was created from a master MicroNIR spectrometer. A set of 25 unknown samples were then identified with three other MicroNIRs showing: 1) the ability to correctly identify the unknown with a very low rate of misidentification, and 2) the ability to use the same library with multiple instruments. In addition, we have shown that through the use of innovative chemometric algorithms, we were able to identify the individual compounds that make up an unknown mixture based on the spectral library of the individual compounds only. The small size of the spectrometer is enabled through the use of high-performance linear variable filter (LVF) technology.

Citation Download Citation

Christopher G. Pederson, Donald M. Friedrich, Chang Hsiung, Marc von Gunten, Nada A. O'Brien, Henk-Jan Ramaker, Eric van Sprang, and Menno Dreischor "Pocket-size near-infrared spectrometer for narcotic materials identification", Proc. SPIE 9101, Next-Generation Spectroscopic Technologies VII, 91010O (21 May 2014); https://doi.org/10.1117/12.2050019

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