Results 141 to 150 of about 2,301 (175)

Polychlorinated dibenzodioxins and polychlorinated dibenzofurans in sewage sludges

Chemosphere, 1985
Abstract 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, 1997
Polychlorinated 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
openaire   +1 more source

Polychlorinated Dibenzodioxins and Polychlorinated Dibenzofurans

Regulatory Toxicology and Pharmacology, 1999
Polychlorinated 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
openaire   +2 more sources

Polychlorinated dibenzodioxins and dibenzofurans in the aluminium recycling process

Journal of Analytical and Applied Pyrolysis, 1999
Abstract 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
openaire   +1 more source

The Risk of Polychlorinated Dibenzodioxins in Human Milk

Journal of Human Lactation, 1988
Recently, 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.
openaire   +2 more sources

Levels of Polychlorinated Dibenzodioxins/Dibenzofurans in Jordanian Clay

CLEAN – Soil, Air, Water, 2014
This 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
openaire   +1 more source

Determination of polychlorinated dibenzodioxins and dibenzofurans in fly ash

Chromatographia, 1997
Polychlorinated 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
openaire   +1 more source

Exposure of laboratory animals to polychlorinated dibenzodioxins and polychlorinated dibenzofurans from commercial rodent chow

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
openaire   +2 more sources

MICROWAVE-ASSISTED EXTRACTION OF POLYCHLORINATED BIPHENYLS AND POLYCHLORINATED DIBENZODIOXINS FROM FLY ASH

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
openaire   +1 more source

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