Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/es00105a600 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Long-range transport of legacy organic pollutants affects alpine fish eaten by ospreys in western Canada.
Sci Total Environ
April 2020
Department of Natural Resource Sciences, McGill University, Ste Anne-de-Bellevue, Canada. Electronic address:
Persistent organic pollutants (POPs) contaminate pristine, alpine environments through long-range transport in the atmosphere and glacier trapping. To study variation in POPs levels in western Canada, we measured levels in the prey (fish) of osprey (Pandion haliaetus) during 1999-2004, and compared those to levels in eggs and chicks. Values in fish muscle (representing human consumption) correlated with whole carcasses (wildlife consumption) for all POPs, except toxaphene, allowing us to pool data.
View Article and Find Full Text PDFInvestigations on the sorption of a toxaphene model congener, the B7-1450, on marine sediments.
Chemosphere
April 2008
Institut des sciences de la mer de Rimouski, Université du Québec à Rimouski, Rimouski, QC, Canada G5L 3A1.
Sorption is a natural process that takes place in sediments or soils and changes the mobility and availability of hydrophobic organic compounds, such as toxaphene pesticide in the environment. The sorption of the 2-exo,3-endo,5-exo,8,9,10,10-heptachlorobornane (B7-1450), used as a model compound of the toxaphene heptachlorobornane congeners found in sediments, was investigated for the first time through a series of batch sorption experiments. The losses of B7-1450 due to adsorption onto glass walls and to evaporation occurring during analytical treatment steps were corrected.
View Article and Find Full Text PDFEffects of seven organic pollutants on soil nematode Caenorhabditis elegans.
Environ Int
August 2007
RECETOX - Research Centre for Environmental Chemistry and Ecotoxicology, Masaryk University Brno, Kamenice 126/3, Brno, CZ-625 00, Czech Republic.
Caenorhabditis elegans is a free-living soil nematode that is commonly used as a model for toxicity tests. The aim of this study was to investigate the toxicity of seven organic pollutants: four azaarenes (quinoline, acridine, phenazine, and 1,10-phenanthroline), short-chain chlorinated paraffins, and two organochlorinated pesticides (toxaphene and hexachlorobenzene). The exposure to all chemicals was carried out in three test media (soil, agar, and aquatic medium), and adult mortality was evaluated after 24 and 48 h.
View Article and Find Full Text PDFPesticide/herbicide pollutants in the Kafue River and a preliminary investigation into their biological effect through catalase levels in fish.
Jpn J Vet Res
November 2006
School of Veterinary Medicine, University of Zambia, Box 32379, Lusaka, Zambia.
The study determined the types of pesticide/herbicide pollutants in water, sediment and fish from the Kafue River. A preliminary investigation of the oxidative stress from these pesticides/herbicides was also assessed by measurement of catalase activity. Water, sediment and fish samples were collected upstream, midstream and downstream the Kafue river in Chingola, Kitwe, Kafue National Park and Kafue Town.
View Article and Find Full Text PDFStructure of the toxaphene compound 2,5-endo,6-exo,8,9,9,10,10-octachlorobornene-2: a temperature-dependent formation of two rotamers.
Environ Sci Technol
March 2005
Department of Chemical- Technical Analysis and Chemical Food Technology, Technical University of Munich, Weihenstephaner Steig 23, D-85354 Freising-Weihenstephan, Germany.
The irradiation of 2,2,3-exo,5-endo,6-exo,8,9,9,10,10-decachlorobornane in n-hexane at 254 nm leads to a spontaneous Cl2 elimination as the major reaction pathway. This results finally in the main product 2,5-endo,6-exo,8,9,9,10,10-octachlorobornene-2, of which the structure could be elucidated with the help of X-ray, 1H and 13C NMR, IR, and MS. Temperature-dependent 1H NMR spectroscopic investigations have shown that the -CHCl2 groups located at C1 and C7 are able to rotate slowly under normal circumstances.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!