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Sediments mercury methylation

Fleming EJ, EE Mack, PG Green, DC Nelson (2006) Mercury methylation from unexpected sources molybdate-inhibited freshwater sediments and an iron-reducing bacterium. Appl Environ Microbiol 72 457-464. [Pg.177]

Pak K-R, R Bartha (1998) Mercury methylation and demethylation in anoxic lake sediments by strictly anaerobic bacteria. Appl Environ Microbiol 64 1013-1017. [Pg.594]

Furutani A, Rudd JWM. 1980. Measurement of mercury methylation in lakewater and sediment samples. Appl Environ Microbiol 40 770-776. [Pg.83]

Gilmour, C.C., Henry, E.A., and Mitchell, R. (1992) Sulfate stimulation of mercury methylation in freshwater sediments. Environ. Sci. Technol. 26, 2281-2288. [Pg.586]

Eventually, it was learned that mercury is converted by bacteria in anoxic sediments into methyl mercury (CH3Hg), which is lipophilic. [Pg.175]

Hintelmann H., Keppel-Jones K., and Evans R. D. (2000) Constants of mercury methylation and demethylation rates in sediments and comparison of tracer and ambient mercury availability. Environ, Tox. Chem. 19(9), 2204—2211. [Pg.4684]

King J. K., Saunders F. M., Lee R. F., and Jahnke R. A. (1999) Coupling mercury methylation rates to sulfate reduction rates in marine sediments. Envirort Toxicol. Ghent. 18, 1362-1369. [Pg.4685]

Introducing oxygen-consuming materials so as to create anaerobic conditions in the sediments and hence reduce mercury methylation. [Pg.1280]

Kerry A, Welboum PM, Prucha B, et al. 1991. Mercury methylation by sulphate-reducing bacteria from sediments of an acid stressed lake. Water Air Soil Pollut 56 565-575. [Pg.619]

Acidity imposes problems in all aspects of metal mobilization in the environment the toxicity of drinking water growth and reproduction of aquatic organisms the increased leaching of nutrients from the soil and the ensuing reduction of soil fertility the increased availability and toxicity of metals and the undesirable acceleration of mercury methylation in sediment (Fager-strom and Jernelov 1972). [Pg.151]

Compeau GC and Baetha R (1987) Effect of salinity on mercury-methylating activity of sulphate-reducing bacteria in estuarine sediments. Appl Environ Microbiol 53 261-265. [Pg.987]

Gagnon C and Fisher NS (1997) Bioavailability of sediment-bound methyl and inorganic mercury to a marine bivalve. Environ Sci Technol 31 993-998... [Pg.990]

Inter alia, it should be noted that high sulfide content in anoxic sediment reduces methylation because of the presence of greater amounts of intractable mercury sulfide. [Pg.628]

What is the relationship of sulfate reducers to mercury methylation in wetland soils and sediment ... [Pg.475]

The microbial-mediated processes of methylation and demethylation of mercury are strongly influenced by redox potential, pH, and microbial activity of the sediment water system (DeLaune et al., 2004). The effect of sediment redox condition on methyl Hg formation in surface sediment of selected Lonisiana Lakes has recently been examined. Methylation of added Hg in sediment was higher under reduced conditions as compared to oxidized conditions (Figure 18.27). Mercury methylation in sediment has been attributed to anaerobic sulfate-reducing bacteria such as... [Pg.700]

What influence does soil-sediment redox have on mercury methylation and toxic organic degradation ... [Pg.701]

How can sulfate influence mercury methylation in sediments In which environment would mercury methylation be restricted ... [Pg.702]

King, 1. K., 1. E. Kotska, M. E. Frischer, F. M. Saunders, and R. A. Jahnke. 2001. A quantitative relationship that demonstrates mercury methylation rates in marine sediments is based on the community composition and activity of sulfate reducing bacteria. Environ. Sci. Technol. 35(12) 2491-2496. [Pg.737]

Sulfate-reducing bacteria are the most important mercury-methylating agents in aquatic environments, with the most important site of methylation at the oxic-anoxic interface in sediments a similar pattern is documented for wetlands. In sediments, miao-bial methylation of mercury is fastest in the upper profiles where rate of sulfate reduction... [Pg.419]

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See also in sourсe #XX -- [ Pg.164 ]



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Mercury methylation

Mercury sedimentation

Mercury sediments

Methyl mercury

Methyl sediment

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