Biogeochemical Fractions of Mercury in Soil Profiles of Two Different Floodplain Ecosystems in Germany

Frohne, Tina; Rinklebe, Jörg

doi:10.1007/s11270-013-1591-4

Cited by 38 publications

(5 citation statements)

References 63 publications

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“…Despite the high affinity of Hg for sulfur, it seems to play a minor role in Hg adsorption in the Union Canal; neither total Hg nor MeHg concentrations were strongly correlated with sediment sulfur content (r 2 = 0.140, p > 0.05 and r 2 = 0.181, p > 0.05 respectively). Similarly, no relationship was found between S and total Hg content in contaminated floodplain soil from the Wupper and Saale River, Germany (Frohne and Rinklebe, 2013). In that case a significant, positive correlation (r 2 = 0.45, p < 0.005) was found between total Hg concentration and Fe content, which was also found in the Union Canal sediments (r 2 = 0.809, p < 0.05).…”

Section: Influence Of Sediment Characteristicsmentioning

confidence: 87%

“…It has also been proposed (Schaefer et al, 2004) that, in more contaminated environments, mercury-resistance (mer) genes are expressed which regulate reductive demethylation, while lower levels of Hg are insufficient to effectively induce expression of these genes. In addition to Hg content, sediment parameters such as the presence of OM; sulfur and iron content and speciation; pH, redox potential and texture all influence methylation (Frohne and Rinklebe, 2013;Frohne et al, 2012;Ullrich et al, 2001). Due to its affinity for sulfur, Hg II in sediment can bind to reduced S groups in OM, limiting its mobility and potential for methylation (Ravichandran, 2004).…”

Section: Introductionmentioning

confidence: 99%

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Mercury alkylation in freshwater sediments from Scottish canals

et al. 2017

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Mercury concentrations were investigated in freshwater sediment from two canals in Scotland, UK. High concentrations found in the Union Canal (35.3-1200 mg kg) likely originate from historical munitions manufacture, with lower levels in the Forth & Clyde Canal (0.591-9.14 mg kg). Concentrations of methylmercury (MeHg) were low - from 6.02 to 18.6 μg kg (0.001-0.023% of total Hg) in the Union Canal and from 3.44 to 14.1 μg kg (0.11-0.58% of total Hg) in the Forth & Clyde Canal - and there was a significant inverse relationship between total Hg concentration and %MeHg. Total Hg concentration was significantly negatively correlated with pH and positively correlated with Fe content (in the Union Canal only) but not with organic matter, S content or the proportion of clay present. The MeHg concentration was not correlated with any of the above sediment parameters. Ethylmercury was detected in the most highly contaminated sediments from the Union Canal.

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Section: Influence Of Sediment Characteristicsmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Mercury alkylation in freshwater sediments from Scottish canals

et al. 2017

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“…SOM forms a complex with heavy metals through adsorption, which reduces the bioavailability of the metals. In contrast, low-molecular-weight organic matter in soil can act as a chelate and improve the bioavailability of metals 77 . Thus, human inputs can affect the physical and chemical properties of soil and control the concentration and bioavailability of heavy metals, which directly or indirectly affects the stability of the soil 78 .…”

Section: Current Status Of Heavy Metal Pollution Inmentioning

confidence: 99%

Comprehensive evaluation of soil quality in a desert steppe influenced by industrial activities in northern China

Wen-bao

et al. 2021

Sci Rep

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Desert steppe soil security issues have been the focus of attention. Therefore, to understand the impact of industrial activities on the soil quality of desert grasslands, this experiment investigated the Gaoshawo Industrial Concentration Zone in Yanchi County. Based on the distance and direction from the industrial park, sample plots were established at intervals of 1–2 km. A total of 82 surface soil samples (0–20 cm) representing different pollution sources were collected. The samples were analysed for pH, total nitrogen, total phosphorus, available phosphorus, available potassium, organic matter, copper (Cu), cadmium (Cd), chromium (Cr), lead (Pb), and zinc (Zn). The desert steppe soil quality was analysed based on the integrated fertility index (IFI) and the Nemerow pollution index (PN), followed by the calculation of the comprehensive soil quality index (SQI), which considers the most suitable soil quality indicators through a geostatistical model. The results showed that the IFI was 0.393, indicating that the soil fertility was relatively poor. Excluding the available potassium, the nugget coefficients of the fertility indicators were less than 25% and showed strong spatial autocorrelation. The average values of Cu, Cd, Cr, Pb and Zn were 21.64 ± 3.26, 0.18 ± 0.02, 44.99 ± 21.23, 87.18 ± 25.84, and 86.63 ± 24.98 mg·kg−1, respectively; the nugget coefficients of Cr, Pb and Zn were 30.79–47.35%. Pb was the main element causing heavy metal pollution in the study area. Higher PN values were concentrated north of the highway in the study area, resulting in lower soil quality in the northern region and a trend of decreasing soil quality from south to north. The results of this research showed that the average SQI was 0.351 and the soil quality was extremely low. Thus, industrial activities and transportation activities in the Gaoshawo Industrial Zone significantly impact the desert steppe soil quality index.

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“…The selective leaching of lanthanide elements and other toxic elements was carried out following the Tessier scheme (Tessier, et al, 1979;Toral, 1996;Prieto, 1997;Pérez, 2004;Prieto et al, 2006;Frohne and Rinklebe, 2013). A weighing between 0.5 g and 1.0 g of dry sample will be placed in a 250 ml flask with 20-40 ml of distilled water was added.…”

Section: Resultsmentioning

confidence: 99%

Sequential extractions of lanthanide elements and toxic metals associated with rare earth phosphate-type minerals

García¹

2019

Acta Geodynamica Et Geomaterialia

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The elements of economic interest in coastal sediments are characterized by a relative high concentration in minerals as the ilmenite, rutile, monazite and manganite. The objective of this work has been to carry out a study of selective sequential extractions of lanthanide elements and metals that are toxic. It started with rare earth phosphate-type minerals, using the technology established in the American continent (Tessier), applicable to sludge and sediments. The study is concerned with the outcrops of REE's minerals reported in Mexico as pegmatite, in the settlement "The Dead", Telixtlahuaca, Oaxaca and of "Lagoon Mother" and "Saw of San Carlos", Tamaulipas. There were evaluated in addition samples of Cuarzomonzodiorite, of "The Incarnation", Hidalgo. Two modifications interfere to the above mentioned scheme of extractions and for the reached results it was possible to find the existence of some elements lanthanides as well as of toxic metals, praseodymium, neodymium, ytterbium and lead, associated with these minerals. The procedure of sequential selective extractions according to Tessier's methodology, does not manage to extract significant quantities of these elements, except in the conditions of maximum aggressiveness, of a digestion with HNO 3 /HClO 4 concentrates and warming.

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Biogeochemical Fractions of Mercury in Soil Profiles of Two Different Floodplain Ecosystems in Germany

Cited by 38 publications

References 63 publications

Mercury alkylation in freshwater sediments from Scottish canals

Mercury alkylation in freshwater sediments from Scottish canals

Comprehensive evaluation of soil quality in a desert steppe influenced by industrial activities in northern China

Sequential extractions of lanthanide elements and toxic metals associated with rare earth phosphate-type minerals

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