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Polychlorinated naphthalene congener profiles in background sediments compared to a degraded halowax 1014 technical mixture

Article Abstract:

Ten lake and sea sediment samples from sites with no known present pollution source have revealed quantified polychlorinated naphthalenes. Levels ranged from 0.14 to 7.6 ng/g (dry weight). The chlorinated naphthalene (CN) congener profiles demonstrated an increased relative abundance of 1,3,5,7- and 1,4,6,7- substituted congener profiles as compared to the reported CN congener profiles of technical PCN and PCB.

Chlorinated Aromatics NEC, Chlorocarbons, Aromatic compounds

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Fate of methylenediphenyl diisocyanate and toluene diisocyanate in the aquatic environment

Article Abstract:

Researchers from Japan, US and the UK discovered that accidental spillage of toluene diisocyanate and methylenediphenyl diisocyanate, chemicals used in the production of polyurethanes, into aquatic waters react to form polymeric solids , polyurea crust byproduct and only small concentrations of soluble diamine.

United Kingdom, Japan, Cyclic crudes and intermediates, Isocyanates

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Assessment of levels, distribution, and risks of polychlorinated dibenzo-p-dioxins and dibenzofurans in the vicinity of a vinyl chloride monomer production plant

Article Abstract:

Researchers found high levels of octachlorinated furan in waste sludge formed in vinyl chloride monomer production and marine sediments near the production plant in Skoldvik, Finland. The pollutants leach into the Gulf of Finland in the Baltic Sea due to improper waste treatment.

Finland, Furan, Furans, Gulf of Finland

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