Interaction of Soil and Mercury as a Function of Soil Organic Carbon: Some Field Evidence

Pant, Prabhakar; Allen, Marshall

doi:10.1007/s00128-007-9186-7

Cited by 31 publications

(16 citation statements)

References 8 publications

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“…Multiple studies have linked Hg dynamics to organic C accumulation and processing both in aquatic (Driscoll et al, 1995;Ullrich et al, 2001) and terrestrial environments (Kolka et al, 1999;Pant and Allen, 2007;Obrist et al, 2012). However, in our study, there were no significant relationships between Hg and C in foliage and Oi/Oe horizon samples.…”

Section: Relationships Between Carbon Nitrogen and Mercury Cyclingcontrasting

confidence: 83%

Using foliar and forest floor mercury concentrations to assess spatial patterns of mercury deposition

Blackwell

Driscoll

2015

Environmental Pollution

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We evaluated spatial patterns of mercury (Hg) deposition through analysis of foliage and forest floor samples from 45 sites across Adirondack Park, NY. Species-specific differences in foliar Hg were evident with the lowest concentrations found in first-year conifer needles and highest concentrations found in black cherry (Prunus serotina). For foliage and forest floor samples, latitude and longitude were negatively correlated with Hg concentrations, likely because of proximity to emission sources, while elevation was positively correlated with Hg concentrations. Elemental analysis showed moderately strong, positive correlations between Hg and nitrogen concentrations. The spatial pattern of Hg deposition across the Adirondacks is similar to patterns of other contaminants that originate largely from combustion sources such as nitrogen and sulfur. The results of this study suggest foliage can be used to assess spatial patterns of Hg deposition in small regions or areas of varied topography where current Hg deposition models are too coarse to predict deposition accurately.

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Section: Relationships Between Carbon Nitrogen and Mercury Cyclingcontrasting

confidence: 83%

Using foliar and forest floor mercury concentrations to assess spatial patterns of mercury deposition

Blackwell

Driscoll

2015

Environmental Pollution

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“…Higher organic carbon content in the soil can enhance both soil microbial activities and the retention of total Hg and MeHg in soil [29]. Soil microorganisms need essential metals for their metabolism, which are often required in low concentrations and act as enzyme cofactors [30].…”

Section: Resultsmentioning

confidence: 99%

Applications of Organic and Inorganic Amendments Induce Changes in the Mobility of Mercury and Macro- and Micronutrients of Soils

García‐Sánchez

Šípková

Száková

et al. 2014

The Scientific World Journal

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Both soil organic matter and sulfur (S) can reduce or even suppress mercury (Hg) mobility and bioavailability in soil. A batch incubation experiment was conducted with a Chernozem and a Luvisol artificially contaminated by 440 mg·kg−1 Hg showing wide differences in their physicochemical properties and available nutrients. The individual treatments were (i) digestate from the anaerobic fermentation of biowaste; (ii) fly ash from wood chip combustion; and (iii) ammonium sulfate, and every treatment was added with the same amount of S. The mobile Hg portion in Chernozem was highly reduced by adding digestate, even after 1 day of incubation, compared to control. Meanwhile, the outcome of these treatments was a decrease of mobile Hg forms as a function of incubation time whereas the contents of magnesium (Mg), potassium (K), iron (Fe), manganese (Mn), copper (Cu), zinc (Zn), and phosphorus (P) were stimulated by the addition of digestate in both soils. The available calcium (Ca) contents were not affected by the digestate addition. The experiment proved digestate application as the efficient measure for fast reduction of mobile Hg at extremely contaminated soils. Moreover, the decrease of the mobile mercury portion was followed by improvement of the nutrient status of the soils.

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“…1, 2, 3, 4 and 6 for the top layer of soil (0-10 cm). In addition, the organic material in forest soils generally increases the capacity of soil to bind metals (Pant and Allen 2007). Difference in the content of mercury in the top layer of soil could be evident when compared to the depth of 60-80 cm (Boszke et al 2008).…”

Section: Sequential Extraction Of Samples From the Locality Of Landekmentioning

confidence: 99%

Mercury speciation in soil in vicinity of coal beds using sequential extraction

2010

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The sequential extraction procedure was proposed and used to study of mercury speciation in real samples of soil. Samples of soil profiles together with bedrock and coal were taken from sampling spots in the vicinity of surficial coal beds in an area with natural coal outcrops. The proposed sequential extraction procedure involves the following fractionation: organic mercury compounds, extractable mercury in an acidic medium, mercury bound to humic substances, elemental Hg and mercury bound to complexes, HgS and residual mercury. The significant distribution of mercury between the two portions-mercury bound to humic substance and HgS was determined in the majority of samples. The mercury bound to humic substances created a significant contribution, especially to the top layer of soil. On the other hand, HgS was the dominant form in the samples from lower layers of the soil profile. The mercury content in the samples did not show a distinct mobility. The influence of soil parameters on the mercury distribution in the studied samples was investigated and discussed.

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Interaction of Soil and Mercury as a Function of Soil Organic Carbon: Some Field Evidence

Cited by 31 publications

References 8 publications

Using foliar and forest floor mercury concentrations to assess spatial patterns of mercury deposition

Using foliar and forest floor mercury concentrations to assess spatial patterns of mercury deposition

Applications of Organic and Inorganic Amendments Induce Changes in the Mobility of Mercury and Macro- and Micronutrients of Soils

Mercury speciation in soil in vicinity of coal beds using sequential extraction

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