Effects of sheep bone biochar on soil quality, maize growth, and fractionation and phytoavailability of Cd and Zn in a mining-contaminated soil. Author links open overlay panel Muhammad Azeem a b c, Amjad Ali d, Parimala G.S. Arockiam Jeyasundar c, Saqib Bashir e, ...
Considering the fractionation of Tl in these mining-metallurgical samples, they may pose a significant environmental hazard. This study provides useful insights …
The fractionation characteristics of REEs have not changed during the dynamic subsidence in the natural state. • Human activities have produced significant Ce and Er anomalies. Abstract. Mining activities cause surface subsidence and the formation of subsidence lakes, which dynamically change with the continuous coal mining …
The economic benefits of mining industry have often overshadowed the serious challenges posed to the environments through huge volume of tailings generated and disposed in tailings dumps. Some of these challenges include the surface and groundwater contamination, dust, and inability to utilize the land for developmental …
The aim of this study was to evaluate the effect of soil acidification and biochar (BC) application on Cd, Pb and Zn mobility and chemical fractionation in two mining soils (A and B). Fifteen leaching columns per soil were packed, applying the following treatments: soil + 3% BC; acidified soil; acidified soil + 3% BC and control soil …
This study analyzed the evolution of metal levels in surface sediments from the Guadalquivir estuary between 1997 and 2002 and assessed the impact of the April 1998 Aznalcollar tailings dam failure and subsequent cleanup on metal concentrations in surface sediments. We also analyzed metal distribution with time in five chemical fractions of the …
Contents of total Hg and Hg fraction, organic matter, pH, grain size and chemical composition were measured to investigate the pollution characteristics and binding behavior of Hg in soils collected from the Chatian Hg mining deposit (CMD), southwestern China. The average concentration of Hg concentration in the CMD soils was 155 and …
The objectives of this study were to measure the isotopic composition of Hg in (1) cinnabar from the Almadén Hg mining district and other cinnabar deposits in Spain to evaluate the isotopic variability within these deposits; (2) calcine, soil, Hg o (L), and the mineral schuetteite to evaluate potential isotopic fractionation during ore retorting; and …
All five river catchments contain significant mine wastes from past mining and calcining activities. The Hg mine and retorts are situated upstream and connect to small, shallow streams, which combine with numerous tributaries downstream, becoming small rivers (Fig. 1).Flow rates are highly dependent on precipitation, and high flow …
Since the 1950s, this city has been an important non-ferrous metal mining and smelting base in China (Nan and Zhao, 2000; Li et al., 2006). On the basis of its watersheds, the city is divided into the Xidagou Basin (or "West Big Ditch," 428 km 2) and the Dongdagou Basin (or "East Big Ditch," 368 km 2) (Nan and Zhao, 2000).
Ore mining and smelting began in southern Poland during the 12th century. Production reached its height between the 1950s and 1980s (Cabala and Teper, 2007). The long history of mining and smelting in this region has negatively influenced the environmental quality and thus can influence life expectancy of local residents …
Assessment of arsenic fractionation, mobility, and bioav ailability in mining-affected soils and remediation measures 0.1–40 mg/kg, Bowen 1979); and the …
Metal-rich wastes resulting from the mining activities are one of the most important potential hazards to the environmental quality (Fergusson, 1990, Larsen et al., 2001).Soils and waters of mining areas present high contents of toxic metals as arsenic, lead, cadmium, etc. (Alloway, 1995).Also, these wastes are acidic and this is another …
This study investigates the utility of Thermolysin as a proteolytic enzyme to enhance the depth and coverage of proteomic analysis in ovarian cancer (OC) extracellular vesicles (EVs). EVs were isolated from OC cell lines and ascites fluid samples from women diagnosed with high-grade serous carcinoma. Proteins were digested using Thermolysin …
Trace element fractionation between PM 10 and PM 2.5 in coal mine dust: Implications for occupational respiratory health. Author links open overlay panel Teresa Moreno a, Pedro Trechera a, Xavier Querol a, ... The mining method used is known as Velenje Mining Method (VMM). The coal seam is 8.3 km long and up to 2.5 km wide at …
2.2. Sample collection, particle fractionation and analytical methods. Groundwater and leachate samples were collected from wells (Fig. 1).A total of seven water samples were collected along three short trails GW1→GW3, GW4→GW5 and GW6→GW7 respectively, including GW control water samples from the uncontaminated granite …
This study was conducted to investigate the pollution load index, fraction distributions, and mobility of Pb, Cd, Cu, and Zn in garden and paddy soils collected …
For example, the Mo isotope fractionation caused by the adsorption of iron hydroxyl (oxide) is significant for Mo migration in the mining environment and is essential for assessing potential impacts and related water quality management strategies (Skierszkan et al., 2019b).
We used natural mercury (Hg) stable isotopes to investigate the Hg cycle in a rainforest soil catena (French Guiana) partially gold-mined during the early 1950s. Litterfall showed homogeneous Δ199Hg values [−0.18 ± 0.05‰, i.e., a modern gaseous elemental Hg (GEM) isotopic signature]. After litter decomposition, Hg bound to organic …
The objectives were to perform chemical fractionation of barium (Ba), chromium (Cr), copper (Cu), nickel (Ni), lead (Pb), and zinc (Zn), and to determine the bioaccessibility of these elements in soils and mining wastes collected in agriculture, forest, mining, and urban areas from the influence zone of the Serra Pelada gold mine.
Using mercury stable isotope fractionation to identify the contribution of historical mercury mining sources present in downstream water, sediment and fish. ... Mercury stable …
Extensive mining and smelting of V in China have resulted in the contamination of soil and water with V and other heavy metals/metalloids, such as chromium (Cr), copper (Cu), ... The speciation, fractionation, and bioavailability of V in soil are affected by numerous factors, such as soil pH, redox potential, OM content, …
Fractionation, distribution and transport of mercury in rivers and tributaries around Wanshan Hg mining district, Guizhou Province, Southwestern China: Part 2 – Methylmercury ... Mining and retorting of Hg-bearing ore are significant sources of Hg to downstream aquatic systems. Drainage from abandoned mines and seepage water from …
Iron is sensitive to redox changes and the fractionation of iron isotopes in natural samples is dependent on the presence of ferric and ferrous iron. Iron isotopic signatures of bulk samples and Fe-bearing minerals have hence been widely used to investigate the evolution of magmas (Dauphas et al., 2017, Johnson et al., 2020).
The aim of this study was to evaluate the effect of soil acidification and biochar (BC) application on Cd, Pb and Zn mobility and chemical fractionation in two …
Heavy element fractionation in contaminated soils was influenced by the presence of mineralogical phases both primary ones related to the emissions of the Zvecan smelter and to materials windborne from mining and industrial dumps (e.g. metallic Pb), and secondary ones originated by in situ processes (e.g. cerussite).
Mercury Isotope Fractionation during the Exchange of Hg(0) between the Atmosphere and Land Surfaces: Implications for Hg(0) Exchange Processes and …
The δ 7 Li value provides constraints on silicate weathering independent of lithology because fractionation of riverine δ 7 Li is mainly controlled by the relative dominance of primary mineral dissolution versus clay mineral formation. Primary mineral dissolution does not fractionate Li isotopes whereas clay mineral formation preferentially incorporates 6 Li …
The chemical fractionation, i.e. the association of elements with specific soil fractions (e.g. extractable, reducible, oxidable and residual), determines how strongly they are retained in soil and how easily they may be mobilized to the hydrosphere and biosphere. ... In fact, this area coincides with an important mining site in the former ...
The sequential chemical extractions, such as P i fractionation (Liu et al., 2015) and Hedley P fractionation ... The farmland soils around mining areas in China exceed 1.5 million ha (Peng et al., 2019, Wang et al., 2019a), majority of which are still in agricultural cultivation. However, the chemical speciation of P in such farmland soils ...
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