Polychlorinated naphthalenes in sediment and biota from the Gdansk Basin, Baltic Sea
Article Abstract:
As many as 44 of 48 possible congeners of tetra- through hepta-chlorinated naphthalenes (CNs) could be quantified in riverine surface sediment and marine biota, affirming the fact that polychlorinated naphthalenes (PCNs) are widespread global pollutants. These are broken down into 19 of 22 tetra-, all 14 penta, nine of 10 hexa-, and both hepta-CNs. A large variation between the samples or groups of the samples was observed in the patterns of tetra-, penta- and hexa-CNs, suggesting different absorption/retention rates and/or pronounced structure-dependent metabolism of some PCN congeners by marine species.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
Relative importance of water and food as cadmium sources to an aquatic insect (Chaoborus punctipennis): implications for predicting Cd bioaccumulation in nature
Article Abstract:
Food represents a more important source of cadmium than water for larvae of the aquatic insect Chaoborus punctipennis. This was substantiated by a three-link planktonic food chain comsisting of larvae of the insect, its crustacean prey and the prey's algal food. No substantial differences were noted between Cd concentrations in larvae exposed to the metal in their food alone as against those exposed to Cd in both sources, suggesting that Cd bioaccumulation from water was minimal. Results indicate Cd uptake from water by organisms at a lower rung of the food chain.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
Spatial distribution in plankton and bioaccumulation features of polychlorinated naphthalenes in a pelagic food chain in southern part of the Baltic proper
Article Abstract:
A number of chloronaphthalene congeners bioaccumulate in the marine biota. The concentrations, profile and patterns of polychlorinated naphthalenes (PCNs) in spatially different plankton samples suggest that the atmosphere is a dominant long-range transportation and deposition route for these compounds into the southern Baltic proper. Variations in compositional pattern suggest selective and structure-dependent metabolism as well as the retention of some polychlorinated naphthalenes within a pelagic food chain.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Effect of chlorinated ethenes on Smin for a methanotrophic mixed culture. Small-column microcosm for assessing methane-stimulated vinyl chloride transformation samples in aquifer samples
- Abstracts: Characterization of the polychlorinated biphenyls in the sediments of Woods Pond: evidence for microbial dechlorination of Aroclor 1260 in situ
- Abstracts: Polychlorinated benzene and polychorinated phenol in heterogeneous combustion reactions of ethylene and ethane
- Abstracts: Biodegradation of naphthalene from coal tar and heptamethylnonane in mixed batch systems. Chemical characterization of coal tar-water interfacial films
- Abstracts: Biodegradation of naphthalene from coal tar and heptamethylnonane in mixed batch systems. part 2 Mass transfer and bioavailability of PAH compounds in coal tar NAPL-slurry systems. 1. model development