Abstract
Today, special attention is paid in environmental analysis to sample preparation methods. Isolation and/or preconcentration of analytes from water samples characterized by complex composition of the matrices constitutes an essential step of analytical procedures used for determination of trace organic components. Collection, transport and storage of water samples are also important. This review paper systematizes available information connected with the occurrence and the analysis of PAHs and PCBs in natural waters. Special attention is paid to point out error sources, which can appear in every step of the analytical procedures.
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