| Abstract [eng] |
Persistent organic pollutants (POP), such as polychlorinated dibenzo-p-dioxins (PCDD), dibenzofurans (PCDF), dioxin-like and non dioxin-like biphenyls (dioxin-like PCB and non dioxin-like PCB), and polybrominated diphenyl ethers (PBDE) at very low concentrations 10-12g/g ar net 10-15g/g may result in adverse effects on human health, so the sensitive high-resolution gas chromatography mass spectrometry method was used for analysis. Analyzed food and feed samples, using two preparation procedures meet all the requirements for analysis. The paper introduced the extraction, purification and fractionation procedures, and on the basis of analytical characteristics, analysis can be applied to real food and feed samples using high resolution gas chromatography mass spectrometry. The comparison of the two sample preparation procedures characteristics, it was found that the automatic sample preparation method was more accurate since it had lower limit of detection, blank level and analysis of amount decreases to 80% as compared with manual methods of sample preparation. After analysis of 224 food products in 2007-2014 period, food safety was estimated in Lithuania. It was found, that many food products are safe, with the exception of the Baltic Sea fish. Identified tolerable daily, weekly and monthly intakes not always met established European commission requirements. |
