The fate and transport of mercury, methylmercury, and other trace metals in chesapeake bay tributaries

Lawson, Nicole; Mason, Robert P.; Laporte, Jean-Michel

doi:10.1016/s0043-1354(00)00267-0

Cited by 105 publications

(60 citation statements)

References 26 publications

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“…The Chinese coastal environment is also affected by pollutant discharge from land. Many coastal waters near large cities contain up 300 ng L À1 THg in seawater [73], which is much higher than the concentrations in coastal seawater with dense populations in the United States and Europe (0.3-4 ng L À1 ) [74][75][76]. Two other studies showed that Hg concentrations in the Yellow Sea and the South China Sea were as low as a few ng L À1 [70,77].…”

Section: Coastal Environmentmentioning

confidence: 92%

Environmental mercury in China: A review

Lin

Vogt

Larssen

2012

Enviro Toxic and Chemistry

101

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Abstract-Mercury is a global pollutant that can be transported over long distances and can bioaccumulate. Currently, China is the country that contributes most to atmospheric Hg emissions and has the greatest intentional (industrial) use of Hg. Mercury in the Chinese environment is generally elevated, particularly in air and water bodies. Remote areas in China also show elevated Hg levels in air and water bodies compared to other rural regions in the world. Large river estuaries are often heavily affected by upstream industrial sources.

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Section: Coastal Environmentmentioning

confidence: 92%

Environmental mercury in China: A review

Lin

Vogt

Larssen

2012

Enviro Toxic and Chemistry

101

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“…The sample bottle was then filled, immediately recapped, double bagged, and stored in the cooler for transport back to the laboratory. 37 The suspended particulate material was removed by filtering the estuarine water through a 0.45 μm Whatman GF/C filter (Millipore) that had been pre-cleaned by heating in a furnace overnight at 400 °C using acid-cleaned glassware and other filtering apparatus 37 and then was processed using the technique described by Sato et al 13 Three filters were collected per sample. The filtration apparatus was rinsed with clean acid and then Milli-Q-water between samples.…”

Section: Sampling and Sampling Areasmentioning

confidence: 99%

Total and methyl mercury in different species of molluscs from two estuaries in Rio de Janeiro State

Kehrig¹,

Costa²,

Moreira³

et al. 2006

J. Braz. Chem. Soc.

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Mercúrio total e metilmercúrio foram avaliados em três espécies de moluscos (Perna pernamexilhão, Crassostrea rhizophorae -ostra, Anomalocardia brasiliana -vôngole) provenientes de dois estuários no estado do Rio de Janeiro, impactados por matéria orgânica e metais pesados. O mexilhão foi a espécie que apresentou melhor capacidade para acumular o mercúrio dentre as espécies de molusco estudadas. Foi observada uma diferença significante nas concentrações de mercúrio entre os organismos de mexilhão, fêmeas e machos (81 ± 1 μg kg -1 e 70 ± 5 μg kg -1 em peso seco respectivamente), com comprimento de concha semelhante. Entretanto, não foi observada diferença significante na percentagem de metilmercúrio entre fêmeas (64%) e machos (63%) de mexilhão. Apesar de possuírem o hábito alimentar semelhante, o mexilhão apresentou concentrações de mercúrio total e metilmercúrio superiores (76 ± 7 μg kg -1 e 48 ± 5 μg kg -1 peso seco) às da ostra (19 ± 4 μg kg -1 e 6 ± 1 μg kg -1 peso seco). Este fato pode estar relacionado com diferenças na capacidade em selecionar o tamanho de partículas e os alimentos ingeridos; também, estar refletindo a maior habilidade do mexilhão em concentrar e excretar o metilmercúrio dos seus tecidos, bem como refletindo as condições ambientais.The paper assesses methyl and total mercury concentrations in three mollusc species (Perna perna -common mussel, Crassostrea rhizophorae -mangrove oyster, Anomalocardia brasiliana -clam) from two estuaries in Rio de Janeiro State, both impacted by organic matter and heavy metals. Mussels showed higher capacity to accumulate mercury compared to the other mollusc species (oyster, clam). A significant difference was observed between mercury concentration in the female mussel organisms and in males (81 ± 1 μg kg -1 dry wt. and 70 ± 5 μg kg -1 dry wt. respectively) with similar total shell length. No significant difference was observed among the % MeHg in the female (64%) and male (63%) mussel organisms. Even though the feeding habits of the molluscs are similar; mussels presented higher mercury and methylmercury concentrations in their soft tissues (76 ± 7 μg kg -1 dry wt. and 48 ± 5 μg kg -1 dry wt.) than oysters (19 ± 4 μg kg -1 dry wt. and 6 ± 1 μg kg -1 dry wt.). This is possible related to their capacity to select particle size and the composition of the ingested food they assimilate, and also reflects the greater ability of mussels to concentrate and excrete methylmercury and also to reflect their environmental conditions.

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“…Across various aquatic systems, river-estuary systems are important ecological environments. In recent years, Hg cycling in estuarine and coastal marine environments have been widely studied (Merritt and Amirbahamn, 2009;Pan and Wang, 2012;Mason et al, 1999;Laurier et al, 2003;Lawson et al, 2001;Han et al, 2006;Can ario et al, 2008;Choe et al, 2004;Conaway et al, 2003). There are only a few reports on the Hg contamination in Chinese estuaries, where high levels of Hg commonly are encountered, caused by the rapid industrial developments (Wang et al, 2009, Luo et al, 2012Gao et al, 2014;Ci et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Characteristics of dissolved organic matter (DOM) and relationship with dissolved mercury in Xiaoqing River-Laizhou Bay estuary, Bohai Sea, China

Jiang

Skyllberg

Björn

et al. 2017

Environmental Pollution

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a b s t r a c tBecause of heterogeneous properties, dissolved organic matter (DOM) is known to control the environmental fate of a variety of organic pollutants and trace metals in aquatic systems. Here we report absorptive and fluorescence properties of DOM, in concurrence with concentrations of dissolved mercury (Hg), along the Xiaoqing River-Laizhou Bay estuary system located in the Bohai Sea of China. A mixing model consisting of the two end-members terrestrial and aquatic DOM demonstrated that terrestrial signatures decreased significantly from the river into the estuary. Quasi-conservative mixing behavior of DOM sources suggests that the variations in the average DOM composition were governed by physical processes (e.g., dilution) rather than by new production and/or degradation processes. In contrast to some previous studies of river-estuary systems, the Xiaoqing River-Laizhou Bay estuary system displayed a non-significant correlation between DOM and Hg quantities. Based on this and the variation of Hg concentration along the salinity gradient, we concluded that Hg showed a non-conservative mixing behavior of suggested end-member sources. Thus, rather than mixing, Hg concentration variations seemed to be controlled by biogeochemical processes.

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The fate and transport of mercury, methylmercury, and other trace metals in chesapeake bay tributaries

Cited by 105 publications

References 26 publications

Environmental mercury in China: A review

Environmental mercury in China: A review

Total and methyl mercury in different species of molluscs from two estuaries in Rio de Janeiro State

Characteristics of dissolved organic matter (DOM) and relationship with dissolved mercury in Xiaoqing River-Laizhou Bay estuary, Bohai Sea, China

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