FTIR spectra research of table salt for high-performance screening of food samples

Abstract

This paper presents the method and results of research on several samples of table salt using the sensitive Fourier-transform infrared spectroscopy method, followed by a comparison with reference spectra of the NaCl compound. The data obtained indicates a difference in the structural composition of the researched samples. However, comparison with the NIST reference spectra database allows to conclude that the performed measurements were reliable and the choice of the spectral resolution was correct. Based on the results obtained, it is possible to anticipate the use of this method as a faster and simpler method compared with the available ones for the analysis of salt samples in order to determine their composition and the presence of impurities in them. Such a device would significantly simplify the quality control of salt products as their analysis would no longer have to be conducted in a laboratory.