Polychlorinated biphenyls (PCBs) are highly lipophilic and stable compound. Aroclor 1254 commercial mixture of PCBs, which are usually given a four-digit number, of which the first two digits that refer to the number of carbon atoms attached to the biphenyl ring and the last two digits indicate the percentage of chlorine atoms[1]. Polychlorinated biphenyls are well known persistent organic poll...

Contaminants of emerging concern, or CECs, can be broadly defined as chemicals that have been recently detected in the environment and that may pose public health or ecological risks. CECs encompass a wide variety of chemicals, including pharmaceuticals and household chemicals. Many CECs differ from conventional environmental contaminants such as pesticides, metals, polychlorinated biphenyls (P...

Organic contaminants [polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), polybrominated diphenylethers (PBDEs), nonylphenols], organotin compounds and trace metals (cadmium, chromium, mercury and zinc) were determined in flounder (Platichthys flesus) liver and sediment from the Amsterdam harbour (North Sea Canal) and Rotterdam harbour (Euromonding) and off the Dutch coast betwe...

Certain chemicals are persistent in aquatic systems and tend to accumulate in the tissue of fish and other aquatic organisms, sometimes to levels that make them unsafe for human or wildlife consumption. The “bioaccumulative” compounds, such as polychlorinated biphenyls (PCBs), are the cause of a significant number of advisories against fish consumption throughout the U.S. Exposure to bioaccumul...

Industrial exposure to polychlorinated biphenyls (PCBs) and internal dose were investigated in 80 worker exposed for many years to PCB mixtures with a 42% chlorine content (Pyralene 3010 and Apirolio). PCBs were determined by liquid gas chromatography on samples taken from workroom air, workroom surfaces and tools, the palms of the hand, and the blood of the workers. In the workroom air samples...

BACKGROUND Although sources and routes of exposure to dioxins and polychlorinated biphenyls (PCBs) have been studied, information regarding exposure among children is limited. Breast-feeding and diet are two important contributors to early life exposure. To further understand other significant contributors to childhood exposure, we studied a cohort of children from a city with high environmenta...

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 ...

In order to protect the human health from harmful effects of smoking, we consider the magnitude and range in levels of various groups of toxic organic compounds: polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), phenols and chloroorganic pesticides in mainstream cigarette smoke, obtained from Yugoslav blend cigarette. The cigarette smoke condensate was collected with el...

Aims of the study: Endometriosis is a prevalent gynecologic disorder in young women at reproductiveage but the underlying risk factors have not identified yet in Iran and other neighboringcountries. Persistent exposure to environmental endocrine disrupting chemicals (EDCs) in particulardioxins, PAHs and polychlorinated biphenyls (PCBs) with xenoestrogenic potentials have beenhypothesized in the...

Worldwide, people’s diets are their main source of exposure to most persistent organic pollutants (POPs).1,2 Fish is a major contributor to POP intake and also the primary dietary source for methylmercury. A new statistical modeling tool discussed in EHP suggests that fish consumption advisories are unlikely to effectively reduce prenatal exposures to polychlorinated biphenyls (PCBs) and other ...