Correlations between dioxin-like and indicators PCBs: potential consequences for environmental studies involving fish or sediment.

Correlations between dioxin - like and indicators PCBs : potential consequences for 2 environmental studies involving fish or sediment

Temporal Trends of PCDDs/DFs and Dioxin-Like PCBs in the Preserved Fish Samples from 1953 to 1999

Introduction Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDDs/DFs) are not manufactured on deliberate purpose; however, these toxic compounds are chemical impurities, unintentional by-products of industrial processes involving chlorine, or burning of organic matter in the presence of chlorine. On the other hand, dioxin-like polychlorinated biphenyls (non-orthoand mono-ortho-substitute...

Long-term food-exposure of zebrafish to PCB mixtures mimicking some environmental situations induces ovary pathology and impairs reproduction ability.

Although the use of polychlorinated biphenyls (PCBs) has been banned for several decades, they are still present in the environment and are occasionally mechanically released from sediment or transferred through the trophic chain. Field analyses have established correlations between exposure to PCBs and alterations in fish physiology including reproductive function. Experimental exposures have ...

Biotransfer of persistent organic pollutants from a large site in China used for the disassembly of electronic and electrical waste.

Samples of groundwater, river water, river sediment, paddy soil, rice seeds, hen eggs, fish, umbilical cord blood, and newborn meconium were collected from October 2002 to October 2003 near a large site in China used for the disassembly of obsolete transformers and other electronic or electrical waste. Six indicator PCB congeners, three non-ortho dioxin-like PCB congeners, and six organochlorin...

Quantitative identification of sources of dioxin-like polychlorinated biphenyls in sediments by a factor analysis model and a chemical mass balance model combined with Monte Carlo techniques.

The major sources of dioxin-like polychlorinated biphenyls (PCBs) in two sediment cores from Tokyo Bay and Lake Shinji (both in Japan) were identified and their source contributions estimated using two receptor models. The first was a nonnegative constrained factor analysis (FA) model, and the second was a nonnegative constrained chemical mass balance model combined with Monte Carlo techniques ...