Gas Extraction Generation of Gas Mixtures of Polar Organic Compounds at the Level of Trace Concentrations
摘要
The generation of gas mixtures of polar organic compounds at the level of their maximum permissible concentrations (several μg/m3) by continuous gas extraction from aqueous solutions with known concentrations in combination with dilution with a diluent gas flow was studied. The distribution coefficients of phenol, isomeric cresols, nitrobenzene, and C4–C6 alkanols between aqueous and gas (nitrogen) phases necessary for this study were determined. A two-stage generation technique based on the saturation of a sorbent (activated carbon) with an extractant gas flow with a given concentration of target components followed by their desorption by a flow of pure extractant gas was proposed.