Organochlorine pesticides in fish from the southern Baltic Sea: Levels, bioaccumulation features and temporal trends during the 1995-2006 period
Abstract
The levels of HCH isomers, HCB and ∑ DDTs were determined in five species of Baltic fish collected during 1995-2006. Some downward time trends of HCH isomer, pp'-DDE and pp'-DDD concentrations in Baltic fish were observed; in contrast, HCB and DDT concentrations did not exhibit any obvious trend. Concentrations of ∑ HCHs expressed on a lipid weight basis were very similar in all species studied. In contrast, concentrations of ∑ DDTs varied in tested species. The most abundant HCH isomer was β-HCH and among DDT-related compounds, pp'-DDE prevailed. In our investigations the sampling sites were not a crucial factor for organochlorine pesticide concentrations and patterns observed in fish, but the occurrence of several inter-species differences in the bioaccumulation features of OC pesticides were observed. For cod there was a positive correlation between fish size (length) and ∑ DDT concentration. In herring, sprat and salmon samples, ∑ DDT concentrations were negatively correlated with fat content.
- Publication:
-
Marine Pollution Bulletin
- Pub Date:
- 2008
- DOI:
- 10.1016/j.marpolbul.2008.01.029
- Bibcode:
- 2008MarPB..56..927S
- Keywords:
-
- DDD;
- 1;
- 1-dichloro-2;
- 2-bis(4-chlorophenyl)ethane;
- DDE;
- 2-bis(4-chlorophenyl)ethylene;
- DDT;
- 1-trichloro-2;
- HCB;
- hexachlorobenzene;
- HCH;
- hexachlorocyclohexane;
- LOQ;
- limit of quantification;
- n;
- number of samples;
- OC pesticides;
- organochlorine pesticides;
- PCA;
- principal component analysis;
- r;
- coefficient of correlation