Arsenic and Heavy Metals in Sediments Affected by Typical Gold Mining Areas in Southwest China: Accumulation, Sources and Ecological Risks Int J Environ …
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1. Introduction. China holds diversified and large-scale mineral resources. There are 171 varieties of mineral resources in China, and proven reserves of mineral resources constitute 12% of the total mineral resources in the world (Hu et al., 2009).Moreover, China is one of the largest global producers and consumers of …
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3.52% of all Silver deposits have Arsenic. 56.63% of all Arsenic deposits have Silver. 1.28% of all Gold deposits have Arsenic. 40.75% of all Arsenic deposits have Gold. 2.49% of all Copper deposits have Arsenic. 38.50% of all Arsenic deposits have Copper. 2.74% of all Lead deposits have Arsenic.
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Wen et al. (2018) found that the arsenic concentration was high as 1274 μg L −1 in mine-contaminated drinking groundwater in Central China. The concentration far exceeded the national drinking standard (10 μg L −1 ) and increased the risk of arsenic disease among the residents.
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Mining-contaminated waters may contain high levels of arsenic (As) and iron (Fe), among various metals and metalloids. The complex behavior of As makes its …
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Three villages in Yunnan Province were identified to have abandoned arsenic mines severely contaminating the local water supplies. Other villages in the Province had …
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In the present study, six sampling sites with different As concentrations were selected in the Realgar mining area in Hunan Province of China. The AMF biodiversity in the rhizosphere soils of the dominant plant species was investigated by sequencing the nuclear small subunit ribosomal RNA (SSU rRNA) gene fragments using 454-pyrosequencing ...
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The century-old mining development and utilization of antimony (Sb) ore in Xikuangshan (XKS) mine, groundwater antimony pollution has attracted great attention. At present, the sources and geochemical behaviors of high Sb groundwater in this area have been widely recognized, but morphological distribution and formation mechanisms of …
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Danzhai Au mine is located about 15 km southeast of Danzhai city in Guizhou province in China (107º58′E, 26 º09′N). The annual average air temperature is 12.6–17.2 °C, and precipitation is 1260 to 1508 mm for this region.
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Taking the surface sediments of rivers near a uranium mine in East China as the research object, the concentrations of seven metals, including Cr, Cu, Ni, Pb, Zn, Cd and As, were analyzed. The pollution degree and ecological risk of heavy metals and arsenic were evaluated according to the geo-accumulation index, pollution loading index, …
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Millions of tonnes of arsenic were released from those arsenic naturally bearing materials and translocated to sediments, soils, and surficial and ground-water as a consequence of the mineral processing and the mining wastes inappropriate disposal, over centuries of intensive mining activities.
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Likewise, Cai et al. (2017) investigated the sources, contamination and mobility of As in rivers and stream sediments impacted by gold mining in China, but focused only on As pollution, and ignored other soil metal contamination of equal environmental concerns from the mining sites, their human health implications on the …
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Heavy metal pollution in soils caused by mining and smelting has attracted worldwide attention for its potential health risks to residents. This paper studies the concentrations and accumulations of Sb and As in both soils and vegetables and the human health risks of Sb and As in vegetables from Xikuangshan (XKS) Sb mine, Hunan, …
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Gold mining is associated with serious heavy metal pollution problems. However, the studies on such pollution caused by gold mining in specific geological environments and extraction processes remain insufficient. This study investigated the accumulation, fractions, sources and influencing factors of arsenic and heavy metals in …
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Arsenic in the mining industry. ... China is the world's leading producer of arsenic (25,000 tons in 2014) followed by Chile (10,000 tons) and Morocco (8,000 tons). [23] SME Statement of Technical Position. Arsenic is a naturally occurring element commonly found as an impurity in metal bearing mineral ores.
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The release of arsenic and related species from mining activities has been investigated widely at both seasonal and diel scales, contributing to the understanding of arsenic cycles, its ultimate ...
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The pollution from large-scale manganese mining and associated industries in Xiangtan (south Central China) has created a significant burden on the local environment. The proximity of mining, and other industrial activity to the local population, is of concern and impact of past industrial on the food chain was evaluated by the assessment of …
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Mining activity is one of the major factors leading to arsenic pollution. Arsenic is the 20th most abundant element in the earth's crust, and most of the As …
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Both thallium (Tl) and arsenic (As) bear severe toxicity. Brake fern (Pteris vittata L.) is well-known for its hyperaccumulation capacity of As, yet its role on Tl accumulation remains unknown. Herein, brake ferns growing near an As tailing site in Yunnan, Southwestern China are for the first time d …
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Arsenic and Sb pollution is a serious issue due to the existence of many large-scale antimony mining activities in china (Hu et al. 2016). The Qinglong antimony mine is situated in Qinglong county, Guizhou province, Southwest China, and has 199,600 metric tons of antimony reserves (Liu et al. 2011 ).
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Arsenic (As) is a trace element in the global environment with toxicity to both humans and ecosystem. This study characterizes China's historical anthropogenic arsenic cycles (AACs) from 1990 to 2010. Key findings include the following: (1) the scale of China's AACs grew significantly during the stu …
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In order to determine the ecological risk and health risk of Arsenic (As) and Cadmium (Cd) in soils from a typical mining city in Huainan, a total of 99 soil samples were collected and analyzed. The results showed that the concentrations of As and Cd ranged from 3.2 to 39.50 and 0.01 to 0.19 mg/kg, respectively, which exceeded the soil …
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2- Line ferrihydrite (Fh) is widely used as a robust amendment for rapid arsenic removal or remediation in water or soil. However, the poorly crystalline phase of Fh is unstable and leads to arsenic leaching after long-term submergence in reductive aquatic and soil environments. In this study, the synthesized As(V)-bound Fh was characterized …
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Study area and sampling. The current research was conducted in Xiangtan County, a typical multi-mining county in central China (Fig. 1).Xiangtan County (27° 20′–28° 05′N, 112° 25′–113° 03′E) covers an area of 2,134 km 2 and has a population of 980,000. It is bounded by the Xiangjiang River, Lian River, and Juan River from southwest to northeast …
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Sanjrani et al.: Arsenic contaminated groundwater in China and its treatment options, a review-1655-APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH 17 (2):1655-1683. Abstract. A high concentration of ...
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Arsenic xide is obtained as a byproduct from dusts and residues produced during the treatment of other metal ores such as gold and copper. The arsenic xide can be purified on site or sold to a refinery. China is the world's leading producer of arsenic (25,000 tons in 2014) followed by Chile (10,000 tons) …
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Background. Three villages in Yunnan Province were identified to have abandoned arsenic mines severely contaminating the local water supplies. Other villages in the Province had similar problems causing the Yunnan Environmental Protection Bureau (YEPB) to seek assistance in developing a remedial strategy.Objectives. Identify the …
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Influencing factors and sources of arsenic in farmland soils in China. The background value of arsenic in farmland soils of various provinces is the main measure …
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Spatial distribution and source identification of heavy metals in surface soils in a typical coal mine city, Lianyuan, China. Environ. Pollut., 225 (2017), pp. 681-690. View PDF View article View in Scopus Google ... s at an abandoned arsenic-containing mine, China. J. Hazard. Mater., 413 (2021), Article 125382. View PDF View article View in ...
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They found that when the minerals are enriched with arsenic, gold can enter mineral structural sites by directly binding to arsenic, forming, chemically speaking, Au (2+) and As (1-) bonds. This ...
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All of the arsenic is imported from China and Morocco. Arsenic can be toxic in large doses,and the mining industry monitors and prevents its release into the environment. …
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Heavy metal pollution in soils caused by mining and smelting has attracted worldwide attention for its potential health risks to residents. This paper studies the concentrations and accumulations of Sb and As in both soils and vegetables and the human health risks of Sb and As in vegetables from Xikuangshan (XKS) Sb mine, Hunan, China.
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Download Citation | Characterizing spatial dependence of boron, arsenic, and other trace elements for Permian groundwater in Northern Anhui plain coal mining area, China, using spatial ...
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The study of the geochemical behavior of arsenic in mining areas microbial remediation of arsenic pollution have great potential and are hot spots for prevention and remediation of arsenic pollution. ... Coupled S and Sr isotope evidences for elevated arsenic concentrations in groundwater from the world's largest antimony mine, Central …
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Arsenic is a byproduct of most mining operations and is present at high concentrations in the mine waste, and, because arsenic sulfides are particularly prone to oxidation in surface environments, in mining wastewaters 42, 44. Arsenic can constitute 1% or more of the ore and solid waste, and wastewaters and impacted streams often contain ...
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In China, high-arsenic concentrations groundwater has been found in Xinjiang, Shanxi, Ningxia, Jilin, Inner ... In the past several decades, intensive mining, arsenic xide smelting, sulfuric acid, and phosphate fertilizer producing were under way until 2011 when it was out of production. A large amount of waste such as mining waste ...
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