| Autor: |
D. Perrone, B. Naso, FERRANTE, MARIA CARMELA, SEVERINO, LORELLA, LUCISANO, ANTONIA |
| Přispěvatelé: |
Perrone, D., Naso, B., Ferrante, M. C., Severino, Lorella, Lucisano, Antonia, D., Perrone, B., Naso, Ferrante, MARIA CARMELA |
| Rok vydání: |
2003 |
| Předmět: |
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| Popis: |
Organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) are ubiquitous environmental contaminants, which tend to bioaccumulate in lipid tissues of living organisms and eventually become hazards for wildlife and humans. Ingestion of fish and seefood from contaminated areas is the main source of human exposure to organochlorines, and several studies have recently demostrated a clear correlation between the frequency of fish consumption and levels of these chemicals in human tissues, serum and milk. Concentrations of hexachlorobenzene (HCB), DDTs and 20 polychorinated biphenyl congeners were determined in edible tissues of ten edible marine species collected from the Gulf of Naples off Campania region (Southern Italy) in order to acquire data on contamination status of the area and to assess potential risks from these chemicals for the human consumers. Homogenized samples were extracted by light petroleum/acetone, cleaned up by n-hexane/acetonitrile repartition and separated into two fractions by passing through a glass column packed with Florisil. The cleaned extracts were analysed using a gas chromatograph equipped with an electron capture detector (63Ni ECD) on two fused silica capillary columns at different polarity. OCPs and PCBs were identified by comparison of retention times with those of the standards on the two columns and quantified from individually resolved peak areas based on the peak areas of corresponding standards. All data were analysed using one way ANOVA test and Tukey-Kramer Multiple Comparisons Test. Residue levels of PCBs as the sum of all the determined congeners were the highest, followed by DDTs and HCB. Marked differences in residue levels of DDTs and PCBs were found between the various investigated species (from P |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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