Airborne mercury deposition and watershed characteristics in relation to mercury concentrations in water, sediments, plankton, and fish of eighty northern Minnesota lakes

Sorensen, John A.; Glass, Gary E.; Schmidt, Kent W.; Huber, James K.; Rapp, George

doi:10.1021/es00081a015

Cited by 158 publications

(68 citation statements)

References 19 publications

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“…Compared to other similar Hg contaminated areas, T-Hg and MeHg contents in fish in this lake were at relatively low levels (Ullrich et al, 2007). Sorensen et al (1990) also reported that T-Hg in sediments from unstratified lakes did not correlate with fish Hg concentrations. Mercury accumulation in biota depends on bioavailable Hg in their living environment (water, sediments) which is influenced by factors such as organic carbon, sulfide, aerobic/anaerobic conditions and acidity of the water bodies.…”

Section: Mercury Speciation In Biotamentioning

confidence: 50%

Trophic transfer of mercury and methylmercury in an aquatic ecosystem impacted by municipal sewage effluents in Beijing, China

Wang

Zhou

et al. 2010

Journal of Environmental Sciences

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Gaobeidian Lake, located in Beijing, China, serves as a recipient lake for effluents from a large municipal sewage treatment plant (MSTP). In order to evaluate the effects of discharging MSTP effluent on the mercury contamination of the local aquatic ecosystem, sediment cores, water, plankton, fish, and turtle samples were collected from Gaobeidian Lake for mercury speciation analysis. High concentrations of total mercury (T-Hg) were detected in sediment cores (5.24-17.0 μg/g dry weight (dw), average: 10.1 μg/g). The ratio of methylmercury (MeHg) to T-Hg was less than 0.3% in sediments and ranged from 35% to 76% in biota samples. The highest level of T-Hg and MeHg were found in aquatic bryophyte and crucian carp (3673 and 437 ng/g dw, respectively). The relative contents of MeHg were significantly correlated with trophic levels (R 2 = 0.5506, p < 0.001), which confirmed that MeHg can be bio-transferred and biomagnified via food chain in this aquatic ecosystem.

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Section: Mercury Speciation In Biotamentioning

confidence: 50%

Trophic transfer of mercury and methylmercury in an aquatic ecosystem impacted by municipal sewage effluents in Beijing, China

Wang

Zhou

et al. 2010

Journal of Environmental Sciences

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“…These toxic compounds can be formed in the water column by both microbial action and abiotic processes. This is the first step for mercury introduction into the food chain [45]. Bioconcentration factors for accumulation of methylmercury (nearly 100% of mercury is methylmercury in fish can reach values up to 10 5 -10 6 in fish [46].…”

Section: Freshwater Ecosystemmentioning

confidence: 99%

“…Since many organisms live in or are in contact with bed sediments, they may assimilate the bioavailable mercury and consequently expose the whole food chains to this toxic compound. For many lakes, sedimentation of Hg 2+ and methylmercury bound to particulate matter is a dominant process for removal of Hg from the water column [45]. In a marine environment, owing to the long water mixing cycles, the sedimentation rates are very low, thus the removal of Hg from the water is expected to be slower.…”

Section: Mercury Incorporation In Sedimentsmentioning

confidence: 99%

Mercury as a global pollutant

Poissant¹,

Dommergue

Ferrari

2002

J. Phys. IV France

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Abstract. Mercury may be one of the best-documented hazardous substances utilised by man. Still the uncovering of the global human impacts on the environment through the use and mobilisation of mercury cannot be considered complete. Recent mercury depletion events observed in the Arctic have opened the horizon to numerous new aspects on mercury fate and cycling in the environment. This chapter browses various aspects of the extremely complex cycling and fate of mercury in the perspective of mercury as a global pollutant and discusses some new emerging research fields in mercury.

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“…Numerous studies suggested that atmospheric deposition is the primary source of Hg to terrestrial and aquatic ecosystems (Lombard et al, 2011), such as Great Lakes (Fitzgerald et al, 1991;Landis and Keeler, 2002), remote inland lakes (Sorensen et al, 1990) and forested catchments (Munthe et al, 1995a). Some other studies considered atmospheric deposition of MeHg to be a minor contributor to the aquatic ecosystem (Mason et al, 2000), while some investigators argued that wet deposition could be an important source of MeHg for certain ecosystems (Munthe et al, 1995b;Rolfhus et al, 2003), such as upland watershed at the ELA (St. Louis et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

Spatial and temporal distributions of total and methyl mercury in precipitation in core urban areas, Chongqing, China

Wang

Meng

et al. 2012

Atmos. Chem. Phys.

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Abstract. The spatial and temporal distribution patterns of mercury (Hg) in precipitation were investigated in the core urban areas of Chongqing, China. During the period from July 2010 to June 2011, total mercury (THg) and methyl mercury (MeHg) concentrations in precipitation were analysed from three sampling sites. Our results suggested that the volume-weight mean THg and MeHg concentrations in precipitation were 30.67 ng l −1 and 0.31 ng l −1 , respectively. The proportion of MeHg in THg ranged from 0.1 % to 7.6 % with a mean value of 1.3 %. THg and MeHg concentrations showed seasonal variations, while the highest THg value was measured in winter. Contrarily, the highest MeHg concentration was observed in autumn. Additionally, a geographically gradual decline of THg concentration in precipitation was observed from the downtown to the suburb, then to the controlled site in the city. 5 mm rainfall might be a threshold for the full wash-out capability. Rainfall above 5 mm may have a diluting effect for the concentrations of THg. Moreover, the current research implies that the coal combustion and motor vehicles could be the dominant sources for Hg in the precipitation.

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Airborne mercury deposition and watershed characteristics in relation to mercury concentrations in water, sediments, plankton, and fish of eighty northern Minnesota lakes

Cited by 158 publications

References 19 publications

Trophic transfer of mercury and methylmercury in an aquatic ecosystem impacted by municipal sewage effluents in Beijing, China

Trophic transfer of mercury and methylmercury in an aquatic ecosystem impacted by municipal sewage effluents in Beijing, China

Mercury as a global pollutant

Spatial and temporal distributions of total and methyl mercury in precipitation in core urban areas, Chongqing, China

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