Low-cost handheld NIR spectroscopy for identification of organic solvents and low-level quantification of water contamination
Geert van Kollenburg, Henk‐Jan van Manen, Nicole Admiraal, Jan Gerretzen, Jeroen J. Jansen
Abstract
Quality control of liquid raw materials arriving on an industrial manufacturing site is typically performed in a dedicated laboratory using time- and chemicals-consuming analytical methods. Herein, we report the successful development of a handheld near-infrared spectroscopy method for the rapid, low-cost testing of organic solvents. Our methodology enables the classification of organic solvents with 100% accuracy and the quantification of water in methyl ethyl ketone with a precision of ~0.01 wt% in the 0-0.25 wt% range. The accessory that we have developed for the NIR sensor enables the development of a broad range of sensing applications on organic liquid systems.