Results 111 to 120 of about 2,033 (151)
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The Risk of Polychlorinated Dibenzodioxins in Human Milk
Journal of Human Lactation, 1988Recently, the news media have reported the presence of the carcinogenic compounds commonly called dioxins in human milk. Based on published Environmental Protection Agency (EPA) levels, the amounts of dioxins in human milk are below the level shown to have any toxic effect in test animals, but above the level recommended by the EPA as safe.
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Polychlorinated dibenzodioxins and dibenzofurans in butter from different states in Australia
Environmental Science and Pollution Research, 2001Nine samples of butter from producers in various states of Australia were analysed for polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs). Detectable concentrations of 2,3,7,8-chlorine substituted PCDD/Fs were found in all samples.
Muller, Jochen F. +4 more
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Levels of Polychlorinated Dibenzodioxins/Dibenzofurans in Jordanian Clay
CLEAN – Soil, Air, Water, 2014This research has taken care of the determination and documentation of dioxins/furans in the Jordanian kaolin, where several samples were collected from different sites in Jordan varying in their geographical nature and geological ages. The research has proved that all samples are dioxin‐free.
Mahmoud A. Alawi +2 more
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Determination of polychlorinated dibenzodioxins and dibenzofurans in fly ash
Chromatographia, 1997Polychlorinated Dibenzo-p-dioxins (PCDD) and Dibenzofurans (PCDF) in fly ash samples from coalburning power plants in Greece have been determined by high resolution gas chromatography combined with mass spectrometric detection (HRGC-MS) applying the isotopic dilution technique. Concentrations of PCDFs were 20 to 600 fold higher than for PCDDs.
K. Fytianos, H. Fr. Schröder
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Journal of Liquid Chromatography & Related Technologies, 2001
The effect of solvent on the extraction of two polychlorinated biphenyls (PCBs) and five polychlorinated dibenzodioxins (PCDDs) from charcoal is investigated and the variations in recoveries of these analytes are explained. The extraction is performed using chromatographic elution, ultrasound-assisted extraction (UAE) of probe- and bath-type ...
Yang, JS, Kim, DH, Lee, DW, Chang, YS
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The effect of solvent on the extraction of two polychlorinated biphenyls (PCBs) and five polychlorinated dibenzodioxins (PCDDs) from charcoal is investigated and the variations in recoveries of these analytes are explained. The extraction is performed using chromatographic elution, ultrasound-assisted extraction (UAE) of probe- and bath-type ...
Yang, JS, Kim, DH, Lee, DW, Chang, YS
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Chemosphere, 1996
Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDDs/PCDFs) are ubiquitous low level environmental contaminants. Present finding of PCDDs and PCDFs in the human food supply suggested that laboratory animals maintained under controlled conditions may also receive unwanted exposure to these compounds from food.
A J, Schecter, J, Olson, O, Papke
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Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDDs/PCDFs) are ubiquitous low level environmental contaminants. Present finding of PCDDs and PCDFs in the human food supply suggested that laboratory animals maintained under controlled conditions may also receive unwanted exposure to these compounds from food.
A J, Schecter, J, Olson, O, Papke
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Journal of Liquid Chromatography & Related Technologies, 2002
The effects of extraction parameters on the microwave-assisted extraction (MAE) of polychlorinated biphenyls (PCBs) and polychlorinated dibenzodioxins (PCDDs) from fly ash were compared. The effects of toluene-isopropyl alcohol (IPA) mixture compositions, solvent volume, temperature, extraction time (rise and hold time), and microwave power on the ...
Jeong Soo Yang +2 more
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The effects of extraction parameters on the microwave-assisted extraction (MAE) of polychlorinated biphenyls (PCBs) and polychlorinated dibenzodioxins (PCDDs) from fly ash were compared. The effects of toluene-isopropyl alcohol (IPA) mixture compositions, solvent volume, temperature, extraction time (rise and hold time), and microwave power on the ...
Jeong Soo Yang +2 more
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Hazardous Waste and Hazardous Materials, 1994
Polychlorinated dibenzodioxins, PCDDs, and polychlorinated dibenzofurans, PCDFs, have the potential to accumulate in sediments given their low water solubilities and correspondingly high sorbent potential to solids. There are numerous sources of these compounds which include not only waste products from current or past manufacturing of specific ...
A.N. CLARKE +3 more
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Polychlorinated dibenzodioxins, PCDDs, and polychlorinated dibenzofurans, PCDFs, have the potential to accumulate in sediments given their low water solubilities and correspondingly high sorbent potential to solids. There are numerous sources of these compounds which include not only waste products from current or past manufacturing of specific ...
A.N. CLARKE +3 more
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Chemosphere, 1991
Abstract Over 300 samples of materials of construction were analyzed for congener specific PCDFs/PCDDs. Comparisons for QA/QC and disposal purposes used USEPA (1989) toxicity equivalency (TE) factors. TEs followed a log normal distribution.
Ann N. Clarke +4 more
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Abstract Over 300 samples of materials of construction were analyzed for congener specific PCDFs/PCDDs. Comparisons for QA/QC and disposal purposes used USEPA (1989) toxicity equivalency (TE) factors. TEs followed a log normal distribution.
Ann N. Clarke +4 more
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Chemosphere, 2002
Eighteen teachers from a highly contaminated school and 11 teachers from a control school participated in this study. Total polychlorinated biphenyl (PCB) indoor air concentration (six indicator congeners x 5) was beyond 12000 ng/m3 in some rooms of the contaminated school. PCB 28 and PCB 52 were the prevailing congeners.
M, Schwenk +3 more
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Eighteen teachers from a highly contaminated school and 11 teachers from a control school participated in this study. Total polychlorinated biphenyl (PCB) indoor air concentration (six indicator congeners x 5) was beyond 12000 ng/m3 in some rooms of the contaminated school. PCB 28 and PCB 52 were the prevailing congeners.
M, Schwenk +3 more
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