Determination of propane chloroderivatives in environmental samples

Studies on determination of the semi-volatile halogenoorganic compounds (SVHCs) in the sewage samples have been carried out and a new method has been developed. Both the static (headspace) and dynamic (stripping with adsorption on solid phase) method of extraction into gaseous phase turned out to be the most efficient ones for determination of SVHCs in the rich environmental matrixes. In order to determine the low concentrations of SVHCs in the presence of high amounts of inorganic compounds and hardly volatile organic compounds (nitro compounds, dyes, fats and so on), the selective extraction and selection of the adequate parameters of the final analysis (GC-ECD) are required. The developed methods (headspace and stripping) of the semi-volatile compounds determination were subjected to a statistical evaluation by determining the precision of measurement (max. R.S.D. = 6.02) and interval of uncertainty (max. +/- 6.31 %). Application of the conventional extrapolative method for quantitative determination of analytes in the complex environmental matrixes gives the satisfying results. (c) 2004 Elsevier B.V. All rights reserved.