Extractability and Bioavailability of Mercury from a Mercury Sulfide Contaminated Soil in Oak Ridge, Tennessee, USA

Han, Fengxiang X.; Shiyab, Safwan; Chen, Jian; Su, Yachun; Monts, David L.; Waggoner, Charles A.; Matta, Frank B.

doi:10.1007/s11270-008-9699-7

Cited by 30 publications

(28 citation statements)

References 23 publications

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“…In the experiment presented herein this procedure was modifi ed. Instead of using Na 2 S, the solution of HCl/HNO 3 /H 2 O (1:6:7, v:v:v) was applied in the fourth stage; this solution is successfully applied in determining forms of mercury linked with sulphides [5,8]. Detailed conditions of the extraction are presented in Table 1.…”

Section: Methodsmentioning

confidence: 99%

Modified Wallschläger Sequential Extraction as a Tool for Evaluating the Mobility of Mercury

Flader¹,

Gworek²,

Kostrzewa-Szulc³

2014

Archives of Environmental Protection

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Abstract:The presented studies were focused on evaluating the utility of one of sequential extraction methods for evaluating the bioavailability of mercury in soils polluted by this element. Soil samples collected from horizons 0-20 cm and 20-80 cm were subject to analysis of the basic physical and chemical properties of soils. Moreover, the total content of mercury was determined and sequential extraction of mercury was conducted using a modifi ed fi ve-stage Wallschläger method.The analyses show that the studied soils are characterized by a variable mercury content, the highest in the surface soil horizons. Sequential extraction of mercury in the analyzed soils has indicated that the highest percentage content in the total content had mercury linked with sulphides. A high content of mercury linked with organic matter was also noted. The content of bioavailable mercury did not exceed 1.5% of the total content.

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Section: Methodsmentioning

confidence: 99%

Modified Wallschläger Sequential Extraction as a Tool for Evaluating the Mobility of Mercury

Flader¹,

Gworek²,

Kostrzewa-Szulc³

2014

Archives of Environmental Protection

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“…A mixture of HCl: HNO 3 :H 2 O (v/v 1:6:7) was employed to dissolve cinnabar mercury from the soil residue after the extraction of non-cinnabar mercury with a repeat extraction (USEPA, method 3200) (Han et al, 2008). Our previous experiments indicated HCl:HNO 3 :H 2 O (v/v 1:7:6) completely dissolved cinnabar mercury from soil and pure HgS chemical (Han et al, 2008). Earthworm samples were digested with concentrated HNO 3 and H 2 O 2 on a hot plate (Han et al, 2006a(Han et al, ,b, 2008.…”

Section: Mercury Analysesmentioning

confidence: 99%

Mercury distribution and speciation in floodplain soils and uptake into native earthworms (Diplocardia spp.)

Han

Shi

et al. 2012

Geoderma

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“…To be methylated, inorganic mercury must be available to appropriate (i.e., sulfate-reducing) bacteria and this availability is mediated by a number of water, soil and vegetative constituents, such as bulk organic matter as well as dissolved organic matter, root exudates, and inorganic ligands (Compeau and Bartha 1984;Ravichandran 2004;Lambertsson and Nilsson 2006). Concentrations of sulfate and sulfides can alter mercury methylation by affecting microbial sulfate reduction via sulfate acting as a limiting reactant and also through limiting inorganic mercury availability through sulfide precipitation (Compeau and Bartha 1984;Benoit et al 1999Benoit et al , 2003Han et al 2008). The collective modulating effects of sulfate and sulfide concentrations on microbial methylation of mercury result in the existence of a relatively narrow sulfate range generally considered optimal for methylation (Benoit et al 2003;Hollweg et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Mercury concentrations in oligohaline wetland vegetation and associated soil biogeochemistry

Willis

Gambrell

Hester

2010

Environ Monit Assess

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Concentrations of mercury were determined in above-and below-ground tissues of dominant plant species, as well as soils, in the wetlands of Lake Maurepas, Louisiana. Indicators of wetland soil biogeochemical status, such as soil redox potential, pore-water nutrient concentrations, and pore-water total sulfides, were also determined. Total mercury concentrations in plant tissues were within the typical range for vegetation not exposed to mercury contamination. Similarly, total mercury concentrations in soils were typical of uncontaminated wetlands within this geographic region. Soil methyl mercury levels in this study are slightly lower than those reported in other studies of nearby wetlands. This may reflect the less extensive geographic sampling in this study, or the low water levels in the Lake Maurepas

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Extractability and Bioavailability of Mercury from a Mercury Sulfide Contaminated Soil in Oak Ridge, Tennessee, USA

Cited by 30 publications

References 23 publications

Modified Wallschläger Sequential Extraction as a Tool for Evaluating the Mobility of Mercury

Modified Wallschläger Sequential Extraction as a Tool for Evaluating the Mobility of Mercury

Mercury distribution and speciation in floodplain soils and uptake into native earthworms (Diplocardia spp.)

Mercury concentrations in oligohaline wetland vegetation and associated soil biogeochemistry

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