Results 101 to 110 of about 2,033 (151)
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Clean - Soil, Air, Water, 1998
It is shown that in the direct photolysis of polychlorinated phenols (2,4,5-TCP, PCP) in aqueous solution, under the action of solar light or UV-radiation from artificial sources, polychlorinated dibenzodioxins (PCDD) and dibenzofurans (PCDF) are found among the products of transformation.
Yu. I. Skurlatov +6 more
exaly +2 more sources
It is shown that in the direct photolysis of polychlorinated phenols (2,4,5-TCP, PCP) in aqueous solution, under the action of solar light or UV-radiation from artificial sources, polychlorinated dibenzodioxins (PCDD) and dibenzofurans (PCDF) are found among the products of transformation.
Yu. I. Skurlatov +6 more
exaly +2 more sources
Determination of polychlorinated dibenzodioxins and dibenzofurans in human milk
Chemosphere, 1986P. Fuerst, H.-A. Meemken, W. Groebel
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Polychlorinated dibenzodioxins and polychlorinated dibenzofurans in sewage sludges
Chemosphere, 1985Abstract A municipal sewage sludge from Syracuse, New York and a largely domestic sludge from Sodus, New York were analyzed for polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) using combined gas chromatography and high resolution mass spectrometry (GC/HRMS).
N.C.A. Weerasinghe +2 more
openaire +1 more source
Separation of polychlorinated dibenzothiophenes from polychlorinated dibenzodioxins and -furans
Fresenius' Journal of Analytical Chemistry, 1997Polychlorinated dibenzothiophenes (PCDT) have recently been identified in a series of environmental samples. Since their masses are very close to those of the polychlorinated dibenzodioxins (PCDD), low resolution mass selective detection cannot be used to distinguish between these two classes of compounds.
Klaus Sielex, J. T. Andersson
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Polychlorinated dibenzodioxins and dibenzofurans in PVC pyrolysis
Polymer Degradation and Stability, 1998The tars produced by PVC pyrolysis under different conditions of temperature and oxygen concentration were analysed for PCDDs and PCDFs content. The tar collected after low temperature pyrolysis (500 °C) and in reduced oxygen atmosphere (11.6% O2) had the highest PCDDs/PCDFs content.
Ian C. McNeill +4 more
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Polychlorinated Dibenzodioxins and Polychlorinated Dibenzofurans
Regulatory Toxicology and Pharmacology, 1999Polychlorinated dibenzodioxins and polychlorinated dibenzofurans (dioxins) are contaminants with long biological half-lives. The most toxic dioxin, 2,3,7,8-tetrachlorodibenzodioxin (TCDD), has a half-life in humans of 9 years. A tolerable daily intake (TDI) of 10 pg/kg body wt/day has been recommended, which was derived from steady-state concentrations
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Polychlorinated Dibenzodioxins and Dibenzofurans
1992Polychlorinated dibenzodioxins (PCDD) and dibenzofurans (PCDF) — often refered to simply as “dioxins” — constitute a group of 210 closely related chemicals. They are mainly formed as byproducts in combustion or heating processes in the presence of substances containing chlorine as well as during the synthesis of chemical compounds structurally based on
J. Lebsanft, A. Basler
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Atmospheric Environment, 2003
Abstract A dynamic gas saturation technique was used to measure the solid-phase vapor pressures (pSo) of six polychlorinated dibenzodioxins (PCDDs) and seven polychlorinated dibenzofurans (PCDFs) at 25°C. Three polycyclic aromatic hydrocarbons (phenanthrene, anthracene, and chrysene) were also examined to validate the method.
Brian T Mader, James F Pankow
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Abstract A dynamic gas saturation technique was used to measure the solid-phase vapor pressures (pSo) of six polychlorinated dibenzodioxins (PCDDs) and seven polychlorinated dibenzofurans (PCDFs) at 25°C. Three polycyclic aromatic hydrocarbons (phenanthrene, anthracene, and chrysene) were also examined to validate the method.
Brian T Mader, James F Pankow
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Polychlorinated dibenzodioxins and dibenzofurans in the aluminium recycling process
Journal of Analytical and Applied Pyrolysis, 1999Abstract At a pilot-scale rotary furnace, aluminium scrap, to which organic material was attached, was molten together with salt at temperatures of ≈700–800°C. Because these conditions are favorable for the production of polychlorinated dibenzodioxins and dibenzofurans (PCDD/F) the following measures were investigated to reduce PCDD/F emissions from ...
A Kaune +5 more
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