............................................................................................................7 Introduction .......................................................................................................7 Experimental ...................................................................................................10 Sample Collection .......................................

10. Abstract Aquatic sediments are often the ultimate receptors of all kinds of contaminants, in particular highly toxic and persistent polychlorinated biphenyls (PCBs). The sediments act as long term sources for the release of PCBs to aquatic environment. Developing effective technologies for cleaning up PCBs-contaminated sites has been one of the highest priorities of USGS, EPA, and DOD. Stat...

The bottlenose dolphin (Tursiops truncatus) is an upper trophic level predator and the most common cetacean species found in nearshore waters of southern Florida, including the Lower Florida Keys (LFK) and the Florida Coastal Everglades (FCE). The objective of this study was to assess contamination levels of total mercury (T-Hg) in skin and persistent organic pollutants (PCBs, PBDEs, DDXs, HCHs...

during the croatian homeland war in 1991, the capacitor batteries of the zadar electric powersubstation (ts 110/35 kv) were damaged, resulting in the severe pollution of the soil with polychlorinatedbiphenyls (pcbs). due to porosity of karstic soil pcbs represent great environmental and human health risksthat need some action. the polluted soil was collected and an experimental field was formed...

Polychlorinated biphenyls (PCBs) were analysed in wild bird eggs from industrialised areas in South Africa. The concentration, congener profile, feeding guild, potential associated risk and biology were investigated. PCBs were detected in all eggs with 30 congeners present in more than 80% of the samples. Σ(34)PCB concentrations ranged between 0.9 and 296 ng g(-1) wet weight (ww). The metabolic...

To evaluate the biomagnification extent of polybrominated diphenyls ethers (PBDEs) and polychlorinated biphenyls (PCBs) in a highly contaminated freshwater food web from South China, trophic magnification factors (TMFs) for 18 PBDE congeners and 53 PCB congeners were calculated. The TMF values ranged 0.26-4.47 for PBDEs and 0.75-5.10 for PCBs. Forty-five of 53 PCBs and BDEs 47, 100 and 154 had ...

Polychlorinated biphenyls (PCBs) have been detected in a variety of environmental media, and they continuously introduced into the environment for industrial reasons, despite their harmful impact upon ecological health. Considering adverse effects PCBs, many researchers begun to analyze remediation technologies PCB-contaminated soil. In this study, rise fall as well physical chemical properties...

PCBs have been commercially produced for various applications since the 1930s. The known global mass production of PCBs virtually ceased in 1984, except for the production in the former Soviet Union, which ended in 1993. Worldwide, more than 1.3 million tonnes of PCBs have been intentionally produced (Breivik et al. 2002a). Dated sediment core studies have indicated that the temporal contaminat...

Persistent Organic Pollutants (POPs) are a global threat, but impacts of these chemicals upon remote areas such as Antarctica remain unclear. Penguins can be useful species to assess the occurrence POPs in Antarctic food webs. This work's aim was evaluation polychlorodibenzo-p-dioxins and furans (PCDD/Fs), polychlorinated biphenyls (PCBs) polybrominated diphenyl ethers (PBDEs) eggs two penguin ...