SELECTED CONTAMINANTS IN FISH AND MUSSELS FROM THE BULGARIAN BLACK SEA

Zlatina Peteva,Bernd Krock,Mona Stancheva,Stanislava Georgieva

doi:10.12955/cbup.v6.1307

Abstract

The presence of polychlorinated biphenyl congeners, organochlorine pesticides and marine biotoxins in the marine environment is important for the evaluation of a potential risk to human health. The purpose of the present study was to determine concentrations of polychlorinated biphenyl congeners (PCBs) and organochlorine pesticides (DDT and its metabolites) in three fish species and mussels (Mytilus galloprovincialis) and marine biotoxins in mussels from the Black Sea, Bulgaria. Concentration of six Indicator PCB congeners, DDT and its metabolites were determined by gas chromatography coupled to mass spectrometry. The mean levels of I-PCBs ranged between 6.78 ng/g ww and 16.33 ng/g ww (garfish and bluefish respectively). The sum of I-PCBs in all seafood studied did not exceed the EU maximum level. Hydrophilic marine biotoxins determination was performed by HPLC with postchromatographic oxidation. Lipophilic marine toxins were determined on liquid chromatograph coupled to mass spectrometry. The analyzed marine biotoxins were under the limit of detection.

Highlights

Fish and shellfish are considered healthy foods because of their high nutritional value including high levels of poly-unsaturated fatty acids (PUFA), especially omega-3 fatty acids
The aim of this study was to determine the concentrations of selected contaminants - polychlorinated biphenyl congeners (PCBs) and organochlorine pesticides (DDT and its metabolites) in bluefish (Pomatomus saltatrix), garfish (Belone belone), sprat (Engraulis encrasicholus ponticus) and mussels (Mytilus galloprovincialis) and marine biotoxins (PSP, ASP, DSP and AZP) in mussels collected from the Black Sea, Bulgaria
dichlorodiphenyltrichloroethane and its metabolites (DDTs) and its metabolites were determined as the major compounds in fish and mussel samples

Summary

Introduction

Fish and shellfish are considered healthy foods because of their high nutritional value including high levels of poly-unsaturated fatty acids (PUFA), especially omega-3 fatty acids. Polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane and its metabolites (DDTs) are well known as persistent substances in the aquatic environment and seafood rapidly accumulates these compounds both through their feeding behavior and from the surrounding environment (Antunes and Gil, 2004; Bordajandi, 2006; Stancheva, 2017b). These toxic substances are listed as persistent organic pollutants (POPs) in The Stockholm Convention (UNEP, 2001)

Objectives

Methods

Results

Conclusion