Biomagnification of Aroclor 1242 in Decomposing Spartina Litter
نویسندگان
چکیده
منابع مشابه
Determination of Aroclor 1242 Concentration in an Aged Contaminated Soil
Polychlorinated biphenyls (PCBs) are ubiquitous environmental contaminants that have attracted great concern in the past few decades. PCBs were first synthesized in 1864 (WHO, 1993) and widely used in the United States between 1929 until their manufacture was banned in 1977 (Erickson, 1986; Nies and Vogel, 1990). Due to the widespread use of PCBs and improper disposal practices, a significant a...
متن کاملAroclor 1242 inhalation and ingestion by Sprague-Dawley rats.
PCBs have been considered to be almost nonvolatile and insoluble in water. However, recent studies have shown the importance of their slight solubility in water and capability to enter the atmosphere and disperse throughout the global environment. This preliminary study was designed to measure uptake and observe any physiological changes in Sprague-Dawley rats. The PCB product Aroclor 1242 is t...
متن کاملInfluence of aroclor 1242 concentration on polychlorinated biphenyl biotransformations in hudson river test tube microcosms.
When 93.3 to 933 (mu)mol of Aroclor 1242 per kg was added to Hudson River sediment test tube microcosms, the rates of polychlorinated biphenyl biotransformations increased with increasing Aroclor 1242 concentration after a 4- to 8-week acclimation period. In contrast, when 37.3 (mu)mol of Aroclor 1242 per kg was added, polychlorinated biphenyl biotransformations occurred at slow constant rates.
متن کاملEvaluation of Degradability of Aroclor 1242 by an Aceticlastic Methanogenic Consortium
The rate and extent of degradation of Aroclor 1242 from contaminated surface soil was investigated, using aceticlastic mathanogenic consortia enriched from municipal anaerobic digester. Two different experiments, “intermediate feed” and “starve and feed” were conducted using triplicate 160-mL serum bottle microcosms, containing either 0.1 g, 1 g, 10 g, or 50 g of soil plus 100 mL of the inoculu...
متن کاملResidual Petroleum in Sediments Reduces the Bioavailability and Rate of Reductive Dechlorination of Aroclor 1242
Residual petroleum hydrocarbons and polychlorinated biphenyls (PCBs) are frequently found together at contamination sites. Intrinsic reductive dechlorination of PCBs at these sites is highly variable. Sediments of Silver Lake (MA), which contain ∼6.2% petroleum hydrocarbons, did not support PCB dechlorination in laboratory assays. Removal of petroleum components from Silver Lake sediments by so...
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 1982
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.44.3.669-677.1982