Vapour Pressure Determination for Dibenzo-p-dioxin, Dibenzofuran, Octachlorodibenzo-p-dioxin and Octachlorodibenzofuran Using a Knudsen Effusion Method
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چکیده
منابع مشابه
Removal of dibenzofuran, dibenzo-p-dioxin, and 2-chlorodibenzo-p-dioxin from soils inoculated with Sphingomonas sp. strain RW1.
Removal of dibenzofuran, dibenzo-p-dioxin, and 2-chlorodibenzo-p-dioxin (2-CDD) (10 ppm each) from soil microcosms to final concentrations in the parts-per-billion range was affected by the addition of Sphingomonas sp. strain RW1. Rates and extents of removal were influenced by the density of RW1 organisms. For 2-CDD, the rate of removal was dependent on the content of soil organic matter (SOM)...
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The production and use of chlorinated chemicals is a significant source of polychlorinated dibenzo-p-dioxin and dibenzofuran (PCDD/F) releases to soils and sediments. The manufacture of a chlorophenol formulation Ky 5 and vinyl chloride monomer between the 1940's and mid-1980's have been identified as potential sources of PCDD/F contamination in the Gulf of Finland sediments. Moreover, Ky 5 was...
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Staphylococcus auriculans DBF63, which can grow on dibenzofuran (DBF) or fluorene (FN) as the sole source of carbon and energy, was isolated. Salicylic acid and gentisic acid accumulated in the culture broth of this strain when DBF was supplied as a growth substrate. Also, the formation of 9-fluorenol, 9-fluorenone, 4-hydroxy-9-fluorenone, and 1-hydroxy-9-fluorenone was demonstrated, and accumu...
متن کاملFormation of dibenzofuran, dibenzo-p-dioxin and their hydroxylated derivatives from catechol.
We present, in this study, mechanistic and kinetic accounts of the formation of dibenzofuran (DF), dibenzo-p-dioxin (DD) and their hydroxylated derivatives (OHs-DF/OHs-DD) from the catechol (CT) molecule, as a model compound for phenolic constituents in biomass. Self-condensation of two CT molecules produces predominantly a DD molecule via open- and closed-shell corridors. Coupling modes involv...
متن کاملBioassay of dibenzo-p-dioxin for possible carcinogenicity.
A bioassay of dibenzo-p-dioxin (UDD) for possible carcinogenicity was conducted by administering the test chemical in feed to Osborne-Mendel rats and B6C3F1 mice. Groups of 35 rats of each sex were administered UDD at one of two doses, either 5,000 or 10,000 ppm, for 110 weeks. Groups of 50 mice of each sex were administered the same doses for 87 or 90 weeks. Controls consisted of groups of 35 ...
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ژورنال
عنوان ژورنال: MATERIALS TRANSACTIONS
سال: 2002
ISSN: 1345-9678,1347-5320
DOI: 10.2320/matertrans.43.2903