Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Organochlorine compounds concentrations

Finally, it is interesting to note that in the fall, female animals exhibited somewhat lower PCB and other organochlorine compound concentrations than male animals. This may be explained in part by lactation throughout the nursing period that occurs during the summer (for more details see Kelly and Gobas, 2001). [Pg.374]

OCs and PCBs were studied. On the contrary, a much larger group of compounds has been studied in the Delta, but in all cases each of the studies was only focused on one group of compounds. The concentrations that have been found for organochlorine compounds (OCs, PCBs, HCB), phthalates and drugs did not exceed 5 pg L-1, with the exception of Flix, where concentrations up to 20 pg L-1 for OCs were found. In contrast, the concentrations of the other groups of compounds were higher and more... [Pg.149]

This matrix was not analyzed in the Ebro river basin until 1999. The first study was the largest study to date, because it combined the analyses of OCs and PCBs in water and sediment samples [80], It was not until 2004 that sediments from the Ebro basin were analyzed again, but in this case the study was focused on the lower course of the Ebro [81], with special attention to the Ebro Delta [24], and the area of Flix [82], downstream of the location of the organochlorine compounds industry in this village, where concentrations of up to 5,000 pg kg 1 of polychloronaphthalene were found. The number of studies that consider the sediment matrix is much lower than for water, and the number of chemical families is smaller, focused mainly on organochlorine compounds and PCBs (Fig. 4). [Pg.150]

Mitchell, S.H. and S. Kennedy. 1992. Tissue concentrations of organochlorine compounds in common seals from the coast of northern Ireland. Sci. Total Environ. 115 163-177. [Pg.882]

Commercial PCB mixtures frequently contain impurities that may contribute to the 2,3,7,8-TCDD toxic equivalency factor. These impurities may include other PCBs, dioxins, dibenzofurans, naphthalenes, diphenyl ethers and toluenes, phenoxy and biphenyl anisoles, xanthenes, xanthones, anthracenes, and fluorenes (Jones etal. 1993). PCB concentrations in avian tissues sometimes correlate positively with DDE concentrations (Mora et al. 1993). Eggs of peregrine falcons (Falco peregrinus) from California, for example, contained measurable quantities of various organochlorine compounds, including dioxins, dibenzofurans, mirex, hexachlorobenzene, and / ,//-DDE at 7.1 to 26.0 mg/kg FW PCB 126 accounted for 83% of the 2,3,7,8-TCDD equivalents, but its interaction with other detectable organochlorine compounds is largely unknown (Jarman et al. 1993). [Pg.1286]

Janz, D.M., T.L. Metcalfe, C.D. Metcalfe, and G.D. Haffner. 1992. Relative concentrations of cytochrome P450-active organochlorine compounds in liver and muscle of rainbow trout from Lake Ontario. Jour. Great Lakes Res. 18 759-765. [Pg.1330]

McIntyre et al. [58, 59] described a method for the analysis of polychlorobiphenyls and chlorinated insecticides in sewage sludges in which homogenized samples are extracted with hexane, concentrated and cleaned up on an alumina/alumina plus silver nitrate column and eluted with hexane. After concentration of the eluent, polychlorobiphenyl and organochlorine compounds were determined by a silica gel chromatographic procedure and gas chromatography. [Pg.225]

G. Liljegren et al., Case-control Study on Breast Cancer and Adipose Tissue Concentrations of Congener Specific Polychlorinated Biphenyls, DDE and Hexachlorobenzene, Eur. J. Cancer Prev. 7 (1998) 155-40 R. J. Helzlsouer et al., Serum Concentrations of Organochlorine Compounds and the Subsequent Development of Breast Cancer, Cancer Epidemiol. Biomarkers. Prev. 8 (1999) 525-52 J. F. Dorgan, Serum Organochlorine Pesticides and PCBs and Breast Cancer Risk Results from a Prospective Analysis, Cancer Causes and Control 10 (1999) 1-11 G. A. S. Mendonca et al., Organochlorines and Breast Cancer a Case-control Study in Brazil, Int. [Pg.119]


See other pages where Organochlorine compounds concentrations is mentioned: [Pg.368]    [Pg.368]    [Pg.76]    [Pg.80]    [Pg.69]    [Pg.240]    [Pg.48]    [Pg.76]    [Pg.15]    [Pg.145]    [Pg.159]    [Pg.367]    [Pg.422]    [Pg.838]    [Pg.838]    [Pg.839]    [Pg.1138]    [Pg.1150]    [Pg.1150]    [Pg.1151]    [Pg.1193]    [Pg.1255]    [Pg.255]    [Pg.51]    [Pg.165]    [Pg.186]    [Pg.183]    [Pg.412]    [Pg.367]    [Pg.422]    [Pg.838]    [Pg.838]    [Pg.839]    [Pg.1138]    [Pg.1150]    [Pg.1150]    [Pg.1151]    [Pg.1193]    [Pg.1255]    [Pg.424]   


SEARCH



Organochlorine compounds

Organochlorines

© 2024 chempedia.info