A KBr-impregnated paper substrate as a sample probe for the enhanced ATR-FTIR signal strength of anionic and non-ionic surfactants in an aqueous medium.

ABSTRACT: Herein, we report a KBr-impregnated paper substrate as a sample probe to enhance the attenuated total reflection-Fourier transform infrared (ATR-FTIR) signal strength of anionic surfactants (AS) and non-ionic surfactants (NS) in an aqueous solution. The mechanism for the sensing of AS and NS is based on the strong interaction of surfactants with the silicate groups (SiO₄ ^4-) of the KBr-impregnated paper substrate. The role of SiO₄ ^4- on the surface of the paper is to enhance the adsorption of AS and NS, resulting in improved IR signal intensities for the target analytes. The improved signal intensity at 1253 cm^-1 (SO₄ ^2-, symmetric stretching) for AS and 1114 cm^-1 (C-O-C, stretching vibration) for NS we

SUBMITTER: Kurrey R 

PROVIDER: S-EPMC9057572 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature