GAS CHROMATOGRAPHIC CONTROL OF TOXIC MICRO-IMPURITIES RELEASEDFROM BUILDING MATERIALS BASED ONABS PLASTIC

Abstract

This work is devoted to the study and development of efficient chromatographic concentra-tor columns based on styrene-divinylbenzene for the control of pollutants. It seemed to us that the most effective way to achieve this goal is to modify the initial sorbent,select and graft specific monomers to the surface, increase the sorption capacity for the analyzed compounds, increase the chro-matographic polarity and, as a result, expand the range of analytical capabilities of the cre-ated chromatographic concentrator columns. The sorbent was modified in this work in several ways. Thus, the sorbent chosen as a standard for comparing the results of experimental data was irradiat-ed with a thin monomer film preliminarily deposited on its surface, or in its saturated or rarefied vapors. A feature of our proposed technology is that the sorbent is subjected to various types of irradiation in the environment of polymeric hydroxyl-containing and carboxyl-containing com-pounds. The paper shows that varying the composition and method of modifying sorbents made it possible to expand the range of determined analytical characteristics of pollutants and increase the efficiency and performance of the developed technical devices. As shown by the exper-iments, from the range of concentrator columns we offer, the most effective are chromatographic devices based on a carboxyl-containing monomer compared to similar devices based on a hydroxyl-containing monomer. Improving the quality control of the operational characteristics of polymer building materials for various technical purposes, among which products based on ABS plastic are most widely used, makes it possible to determine the type of pollution in a timely manner, develop methods for their elimination, expand their engineering applications and improve the quality of the environment.