Results 131 to 140 of about 1,446 (170)
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Bulletin of Environmental Contamination and Toxicology, 1977
The purpose of the study was undertaken to determine the effect of PCBs and PCDFs on serum protein components of rats. Four groups of 10 rats each were fed the diet containing 0 (controls), 1 ppM, 10 ppM of PCDFs or 100 ppM of PCBs. The rats fed the diet containing both doses of PCDFs showed a significantly depression of growth rate.
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The purpose of the study was undertaken to determine the effect of PCBs and PCDFs on serum protein components of rats. Four groups of 10 rats each were fed the diet containing 0 (controls), 1 ppM, 10 ppM of PCDFs or 100 ppM of PCBs. The rats fed the diet containing both doses of PCDFs showed a significantly depression of growth rate.
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Archives of Environmental Contamination and Toxicology, 2001
This study was carried out to evaluate the internal exposure to polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDDs/PCDFs) of chimney sweeps in Bavaria compared to a control group without occupational exposure. The PCDD/PCDF concentrations in the blood fat of 227 chimney sweeps were compared with the concentrations in samples ...
R, Wrbitzky +7 more
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This study was carried out to evaluate the internal exposure to polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDDs/PCDFs) of chimney sweeps in Bavaria compared to a control group without occupational exposure. The PCDD/PCDF concentrations in the blood fat of 227 chimney sweeps were compared with the concentrations in samples ...
R, Wrbitzky +7 more
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Archives of Environmental Contamination and Toxicology, 2008
The mink (Mustela vison) is often utilized as a sentinel species for ecological assessments at sites where contaminants of concern include dioxins and dioxin-like compounds. Utilizing mink scat as a nondestructive tool to determine internal exposure to dioxin-like compounds may allow for rapid, accurate estimates of exposure without the need to capture
Zwiernik, Matthew J. +7 more
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The mink (Mustela vison) is often utilized as a sentinel species for ecological assessments at sites where contaminants of concern include dioxins and dioxin-like compounds. Utilizing mink scat as a nondestructive tool to determine internal exposure to dioxin-like compounds may allow for rapid, accurate estimates of exposure without the need to capture
Zwiernik, Matthew J. +7 more
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Chemosphere, 1990
Abstract A mixture of nineteen individual PCDF congeners (of which 17 were analyzed) was given as a single oral dose (0.1 μg of each congener/kg body weight) to rats, guinea pigs and hamsters. Postadministration levels of PCDFs in the liver were determined for days 1, 5, 10, 30 and 90.
U.G. Ahlborg +3 more
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Abstract A mixture of nineteen individual PCDF congeners (of which 17 were analyzed) was given as a single oral dose (0.1 μg of each congener/kg body weight) to rats, guinea pigs and hamsters. Postadministration levels of PCDFs in the liver were determined for days 1, 5, 10, 30 and 90.
U.G. Ahlborg +3 more
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Chemosphere, 1987
Abstract Tissues from patients with Yusho (liver, adipose and lung) and a Japanese control subject (adipose) were analyzed for tetra- to heptachlorodibenzofuran congeners by capillary gas chromatography-mass spectrometry in the negative chemical ionization mode.
H. Kuroki, K. Haraguchi, Y. Masuda
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Abstract Tissues from patients with Yusho (liver, adipose and lung) and a Japanese control subject (adipose) were analyzed for tetra- to heptachlorodibenzofuran congeners by capillary gas chromatography-mass spectrometry in the negative chemical ionization mode.
H. Kuroki, K. Haraguchi, Y. Masuda
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Chemosphere, 1994
Abstract Results are reported for the analysis of the PCDD and PCDF contents of different kinds of wood ash. Ash samples were received from firing plants of the wood working industry, from a smoke house and from the combustion of impregnated wood in a laboratory two-stage furnace.
Katrin Pohlandt, Rainer Marutzky
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Abstract Results are reported for the analysis of the PCDD and PCDF contents of different kinds of wood ash. Ash samples were received from firing plants of the wood working industry, from a smoke house and from the combustion of impregnated wood in a laboratory two-stage furnace.
Katrin Pohlandt, Rainer Marutzky
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Chemosphere, 1989
Abstract Hot ethanolic alkali as used in the saponification of fatty material has been shown to degrade PCDFs and PCDDs in proportion to their increasing chlorine content and, in the case of the PCDFs, to produce lower chlorinated PCDFs and ethoxy-PCDFs as artifacts.
John J. Ryan +3 more
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Abstract Hot ethanolic alkali as used in the saponification of fatty material has been shown to degrade PCDFs and PCDDs in proportion to their increasing chlorine content and, in the case of the PCDFs, to produce lower chlorinated PCDFs and ethoxy-PCDFs as artifacts.
John J. Ryan +3 more
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Chemosphere, 1992
Abstract 28 samples of Swiss cow's milk and one sample of goat's milk were analyzed for PCDDs and PCDFs. The results show that concentrations in average consumers milk are similar to those in milk from other European countries. Very low background contamination was detected in milk from rural areas without specific PCDD/PCDF sources. The influence of
P. Schmid, Ch. Schlatter
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Abstract 28 samples of Swiss cow's milk and one sample of goat's milk were analyzed for PCDDs and PCDFs. The results show that concentrations in average consumers milk are similar to those in milk from other European countries. Very low background contamination was detected in milk from rural areas without specific PCDD/PCDF sources. The influence of
P. Schmid, Ch. Schlatter
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Analytical and Bioanalytical Chemistry, 1996
A software has been developed for the peak recognition of 136 polychlorinated dibenzo-p-dioxins (PCDD) and polychlorinated dibenzofurans (PCDF) after high resolution gas chromatography coupled with mass spectrometry (HRGC/HRMS). Based on the retention times of (13)C labelled 2,3,7,8-substituted PCDD/F internal standards, the retention times of all PCDD
X M, Liang +7 more
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A software has been developed for the peak recognition of 136 polychlorinated dibenzo-p-dioxins (PCDD) and polychlorinated dibenzofurans (PCDF) after high resolution gas chromatography coupled with mass spectrometry (HRGC/HRMS). Based on the retention times of (13)C labelled 2,3,7,8-substituted PCDD/F internal standards, the retention times of all PCDD
X M, Liang +7 more
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Archives of Toxicology, 1989
A defined mixture (of a composition characteristic of that present in incinerator fly ash) of polychlorinated dibenzo-p-dioxins and -furans (PCDDs and PCDFs) was subcutaneously administered to rats and the elimination of the unchanged congeners via faeces was measured. 1) All congeners administered could be found in faeces.
K, Abraham +5 more
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A defined mixture (of a composition characteristic of that present in incinerator fly ash) of polychlorinated dibenzo-p-dioxins and -furans (PCDDs and PCDFs) was subcutaneously administered to rats and the elimination of the unchanged congeners via faeces was measured. 1) All congeners administered could be found in faeces.
K, Abraham +5 more
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