Detection of Volatile Aromatic Hydrocarbons from the Gas Phase by Fluorescence and Absorption Spectra of Guest—Host Complexes with Cyclodextrins in Gel Matrices

摘要

An approach for determining volatile aromatic hydrocarbons based on the use of polyacrilamide gel layers containing cyclodextrin molecules is developed. Using the examples of naphthalene, toluene, and o-xylene, the principal possibility of detecting these hydrocarbons at the level of the maximum allowable concentration due to the formation of supramolecular complexes of inclusions into cyclodextrins is demonstrated. It was shown that the study of the kinetics of gaseous analyte incorporation in gels makes it possible to obtain information on their diffusion coefficient and analyze analyte mixtures.