Results 121 to 130 of about 1,446 (170)

Polychlorinated dibenzofurans (PCDFs)

Toxicological and Environmental Chemistry, 1985
Martin Van Den Berg, Otto Hutzinger, Kees Olie   +2 more
exaly   +2 more sources

Formation of polychlorinated dibenzofurans (PCDFs) from the pyrolysis of PCBs

Chemosphere, 1978
Christoffer Rappe
exaly   +2 more sources

Formation of polychlorinated dibenzofurans (PCDFs) from the pyrolysis of individual PCB isomers

Chemosphere, 1979
Hans Rudolf Buser
exaly   +2 more sources

Metabolism of polychlorinated dibenzofurans (PCDFs) in rats

Chemosphere, 1990
Abstract Metabolism of polychlorinated dibenzofurans (PCDFs) was investigated in rats using a mixture of PCDF congeners, including 1,2,7,8-tetra-, 2,3,7,8-tetra- and 1,2,3,7,8-penta-CDFs as major components. The feces of rat dosed with PCDFs were examined for unchanged PCDFs, hydroxylated and sulfur-containing metabolites by gas chromatography (GC ...
H. Kuroki, K. Haraguchi, Y. Masuda
openaire   +1 more source

Vapor pressures of the polychlorinated dibenzodioxins (PCDDs) and the polychlorinated dibenzofurans (PCDFs)

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
openaire   +1 more source

Emissions of Polychlorinated Dibenzo-p-Dioxins and Dibenzofurans (PCDD/PCDFs) in Iran

Bulletin of Environmental Contamination and Toxicology, 2011
The aim of this study was estimation of PCDD/PCDFs emissions from various sources in Iran. The results indicated total PCDD/PCDFs emissions in Iran in 2010, was 1,957 g TEQ. Of this amount, about 705.8, 0.5, 463.5, 144.1 and 643.2 g TEQ/year was released to air, water, land, products, and in residues, respectively.
Fatemeh, Momeniha, Ramin, Nabizadeh, Mohammad Sadegh, Hassanvand, Amir Hossein, Mahvi, Kazem, Naddafi, Alireza, Mesdaghinia, Simin, Nasseri   +6 more
openaire   +2 more sources

Aqueous solubilities of selected 2,3,7,8-substituted polychlorinated dibenzofurans (PCDFs)

Chemosphere, 1990
Abstract Aqueous solubilities are reported for a series of 2,3,7,8-chlorinated dibenzofurans, 2,3,7,8-tetra-, 2,3,4,7,8-penta-, 1,2,3,6,7,8-hexa-, 1,2,3,4,7,8-hexa-, and 1,2,3,4,6,7,8-heptachlorodibenzofuran, at 22.7°C. The solubilities of the solid solutes decrease approximately 8-fold for each additional chlorine in the structure, ranging from 419 ±
Kenneth J. Friesen, Jeffery Vilk, Derek C.G. Muir   +2 more
openaire   +1 more source

Synthesis and mass spectral properties of polychlorinated dibenzofuran (PCDF) metabolites

Chemosphere, 1987
Abstract A large number of hydroxy-, dihydroxy-PCDF and sulfur-containing compounds such as methylthio (MeS)-, methylsulfoxide (MeSO)- and methylsulfone (MeSO 2 )-PCDF congeners were synthesized and their mass spectra were investigated. The 2(8)-MeSO 2 -PCDF showed an intense ion due to loss of SO 2 CH 3 from the molecular (M + ) ion, while 3(7 ...
H. Kuroki, R. Hattori, K. Haraguchi, Y. Masuda   +3 more
openaire   +1 more source

A new method of predicting of gas chromatographic retention indices for polychlorinated dibenzofurans (PCDFs)

Chemosphere, 2000
A new method has been developed to describe the quantitative relationship between molecular structures of PCDFs and their gas chromatographic retention indices on a 30-m fused silica column coated with DB-5 stationary phase. The regression equation is derived with a multiple correlation coefficient greater than 0.9995.
X, Liang, W, Wang, K W, Schramm, Q, Zhang, K, Oxynos, B, Henkelmann, A, Kettrup   +6 more
openaire   +2 more sources

Polychlorinated dibenzofurans (PCDFs): Correlation between in vivo and in vitro structure-activity relationships

Toxicology, 1985
Fifteen polychlorinated dibenzofuran (PCDF) congeners were administered in a dose-response fashion to immature male Wistar rats and ED50 values for body weight loss, thymic atrophy and the induction of the hepatic microsomal cytochrome P-448-dependent monooxygenases, aryl hydrocarbon hydroxylase (AHH) and 4-chlorobiphenyl hydroxylase were determined ...
G, Mason, T, Sawyer, B, Keys, S, Bandiera, M, Romkes, J, Piskorska-Pliszczynska, B, Zmudzka, S, Safe   +7 more
openaire   +2 more sources