Dioxins released from chemical accidents
Article Abstract:
The EPA has produced a six-volume, 2,000-page draft of a report on the toxic effects of dioxin and dioxin-like chemicals on humans. The report shows that adverse health effects in humans due to these chemicals occur only at high concentrations. Estimates of these chemicals in the environment based on known sources are low and thus could lead some to think that EPA regulations are too strict. However, the levels of these chemicals in the environment may be greatly underestimated because their release due to chemical accidents are rarely recorded. Thus, better methods are needed to estimate the release of these chemicals into the environment.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
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Dioxins in diesel exhaust
Article Abstract:
The addition of organic metal compounds such as copper compounds to diesel fuel decreases soot emission but increases dioxins emission by catalyzing dioxin formation. A ceramic filter fitted to the exhaust pipe collects soot that is burnt by heating or catalytic burning by the organic metal compound. Dioxins are formed by de novo synthesis in the combustion engine in the presence of a chlorine donor and small amounts of chlorine. The dioxin emission is greater at lower engine loads than higher loads if speed is constant.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1996
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Food contamination by PCBs and dioxins
Article Abstract:
It is highly unlikely that the isolated episode of food contamination by polychlorinated biphenyls (PCB) and dioxins in Belgium will have a negative impact on the health of the general population. It was established that it was mainly poultry that was affected, with PCB concentrations in eggs and chicken meat being up to 250 times the tolerance level. There was also some contamination of pigs, but no symptoms of poisoning were seen. There was no contamination in bovine livestock.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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