Congener profiles of polychlorinated biphenyls in core sediments of Sunderban mangrove wetland (N.E. India) and their ecotoxicological significance
| العنوان: | Congener profiles of polychlorinated biphenyls in core sediments of Sunderban mangrove wetland (N.E. India) and their ecotoxicological significance |
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| المؤلفون: | C. Riva, Mousumi Chatterjee, Bhaskar Deb Bhattacharya, Marco Parolini, Andrea Binelli, Kamala Kanta Satpathy, Santosh Kumar Sarkar, A. Bhattacharya |
| المصدر: | Environmental Monitoring and Assessment. 153:221-234 |
| بيانات النشر: | Springer Science and Business Media LLC, 2008. |
| سنة النشر: | 2008 |
| مصطلحات موضوعية: | Pollution, Geologic Sediments, geography, Persistent organic pollutant, geography.geographical_feature_category, Ecology, media_common.quotation_subject, India, food and beverages, Sediment, Estuary, Wetland, General Medicine, Management, Monitoring, Policy and Law, Ecotoxicology, Polychlorinated Biphenyls, Congener, Wetlands, Environmental science, Mangrove, General Environmental Science, media_common |
| الوصف: | The paper presents the first comprehensive survey of congener profiles of polychlorinated biphenyls (PCBs) in core sediment samples (63 microm particle size) covering seven sites in Sunderban mangrove Wetland, north-eastern part of the Bay of Bengal. Results pointed out a non-homogenous contamination of the wetland with Sigma23PCB values ranging from 0.5 to 26.9 ng g(-1) dry weight, reflecting very low to moderate contamination closely in conformity to other Asian coastal environment. The general decreasing order of the dominant congeners to the total load was: CB138153149101, indicating the predominance of hexa-chlorinated congeners. The spatial distribution revealed significant differences in concentration related to local urbanization with industrial and land-based sources. No uniform temporal trend on PCB levels was recorded probably due to particular hydrological characteristics of the wetland and/or non-homogenous inputs from point sources. Strong positive correlations between the seven dominant congeners suggest their common sources and similar environmental behaviors. These results were also used for a risk assessment evaluation in the Sunderban wetland, showing that the present PCB levels were exceeding in few cases the lower limit of sediment quality guidelines of Environmental Protection Agency and Canadian Council of Ministers of the Environment. |
| تدمد: | 1573-2959 0167-6369 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b74659b7d068acb3d67b934f76127174Test https://doi.org/10.1007/s10661-008-0351-1Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....b74659b7d068acb3d67b934f76127174 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15732959 01676369 |
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