Determination of volatile organics in gaseous phase using porous adsorbents

Misharina, T.
February 2010
Journal of Analytical Chemistry;Feb2010, Vol. 65 Issue 2, p127
Academic Journal
A novel procedure is developed for the quantitative determination of volatile organics in the gas phase over samples. Substances were extracted and preconcentrated from the gas phase on porous polymer adsorbents under the conditions of thermodynamic equilibrium, followed by back extraction from the adsorbent using organic solvents. The final monitoring was performed by capillary gas chromatography with an internal standard. The influence of adsorption time and the concentration of substances in an aqueous solution on the degree of extraction were also studied; linear correlations between the quantities of substances in the gas and aqueous phases were found. The method was used for the determination of volatile substances in the gas phase over liquid and solid matrixes of different origin.


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