PESTICIDES ANALYSIS IN FOOD MATRICES; IMPROVEMENT OF EXTRACTION AND ANALYSIS STEPS BY GC-MS; ADVANTAGES AND DISADVANTAGES; POSSIBLE IMPROVEMENTS

摘要

Persistent organic pollutants (POPs) such as polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) have been found in food since about a half a century. Although most of these contaminants have been phased out, residues are still being found, emphasizing the persistant character of these POPs. Honey is an exported product of Romania and according to EEC regulations honey as a natural product must be free of any chemical contaminants for human consumption. In literature high presence of OCPs (mainly alpha-HCH, beta-HCH, gamma-HCH, delta-HCH isomers of hexachlorcyclohexane, HCH) were found in several kinds of honey from different European countries even if OCPs have been restricted or banned for agriculture use since 1978 in the USA and Europe. These pesticides have been restricted due to their persistence and bioaccumulation in the environment.