The present study was initiated to investigate the geochemical features and associated pollution risks of selected heavy metals in sediments near an active copper sulfide mines, south China. These results indicated that legacy contamination in sediments were mainly Cd (11.9 mg/kg), Cu (0.106%), Pb ( …
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This phenomenon has important implications for the prevention and reduction of heavy metal pollution through various effective measures in coal-mining cities in northern China. Keywords: Land use; Mining area; Positive matrix factorization (PMF); Soil heavy metals; Source analysis; Spatial distribution.
As an essential component of the ecological environment, soil serves as the foundation for the survival and growth of humans and plants [1].However, due to the rapid expansion of mining industries, the slag formed by anthropogenic mining and the tailings accumulated result in the dispersion of heavy metals (HMs) to the surrounding areas through …
This research reviews relevant information on heavy metal pollution in China's lead–zinc mine tailings from 2015 to 2020. This study included eight heavy metals of As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn, all of which are priority heavy metal pollutants as designated by United States Environmental Protection Agent (USEPA).
This study employed machine learning (ML) to thoroughly investigate the impact of informal mining activities on the distribution and pollution status of heavy metals in soils near private gold mines in Hainan Province, southern China, a region known for its ecological sensitivity and economic importance. By systematically collecting surface soil samples and …
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Source apportionment is critical but remains largely unknown for heavy metals in the soil surrounding black shale mining areas. Herein, the distribution, potential hazards, and sources of heavy metals in the soil around a black shale post-mining site were investigated. The content of Cadmium (Cd) in …
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Carbonate rocks are the dominant lithology in the upper and middle reaches of the Pearl River Basin of China. The bedrock itself has low heavy metal content except for Cd and As (Wang et al., 2012; Qu et al., 2020), but the weathering rate of carbonate rocks is more than an order of magnitude higher than that of silicate rocks (Meybeck, 1987; Liu et al., 2011).
The company, which owns a gold deposit in Ivory Coast, accepted a C$57.3 million ($41.8 million) investment from China's Zijin Mining Group for a 9.9% stake in mid-July. Montage said it believes ...
Soil contamination by heavy metals (HMs) in mining areas is a major issue because of its significant impact on the environmental quality and physical health of residents. ... As, Cr, Cu, Pb, Cd, and Zn) concentrations were lower than the screening values in China (GB 15618-2018) but higher than the soil background values in the Huaibei Bozhou ...
Mining activities not only lead to the massive stacking of tailings, which was one of the six most concerned solid wastes listed in "The 13th five-year plan for comprehensive utilization of industrial solid wastes" in China, but also cause heavy metal contamination. Inner Mongolia is one of the mineral resource bases in China.
Heavy metal contamination, particularly vanadium contamination in mining and smelting areas, is a worldwide serious problem threatening the ecological system and human health. ... Effective phytoremediation of low-level heavy metals by native macrophytes in a vanadium mining area, China Environ Sci Pollut Res Int. 2018 Nov;25(31):31272-31282 ...
Introduction. Mining and smelting activities have had an important role for local and national economies; however, mining-related industries have commonly been performed in an uncontrolled way, giving rise to severe soil erosion and environmental problems, especially heavy metal pollution, .The discharge of acidic mine drainage (AMD), with elevated levels of heavy …
Major Chinese copper and gold producer Zijin Mining Group said a slowing global economy, geopolitical tensions, and resource nationalism could restrict its overseas deal-making ambitions. Net ...
This study has the following limitations: (i) China has a large number of mines, but this study may not fully represent the status of all surrounding areas affected by mining in China; (ii) the distribution of mining areas is uneven, mainly concentrating on the East and Central South China, while the HM data in western China (e.g., Chongqing ...
Huahong company′s quality of products have been in a leading and dominant position in machinery industry of China. Its high-quality products and first-class services were also have …
South Wheel Industry Co.,Ltd - China supplier of wheel rims, truck wheels, mining truck - EC21 Mobile. South Wheel Industry Co.,Ltd - China supplier of wheel rims, truck wheels, mining truck …
Import heavy mining equipment from various high-quality China wholesale heavy mining equipment suppliers, manufacturers (OEM, ODM & OBM), factory lists, and more Chinese …
Established in 2005, (China) Machinery Components Co. Ltd. is the first wholly owned company of supporting components. Located in the Wuxi New District, Jiangsu Province, (China) …
Company Introduction: Henan Kexing Heavy Industry Co., Ltd. is a leading Mining equipment manufacturer in China. Our company was established in 1987 and is located in Henan …
Policy recommendations are proposed related to brownfield management in urban planning based on the results of a basic investigation and inventory of heavy metal (HM) pollution levels in contaminated soil in brownfields throughout China. The rapid urbanization of China and associated demand for land resources necessitates remediation, redevelopment, and …
Henan Fote Heavy Machinery is a large-scale mining machine manufacturer with a high reputation for decades of history, located in Zhengzhou, Henan Province. In 1995, the establishment of our joint stock Co., Ltd. has taken a leap in China's machinery manufacturing industry… more
China is one of the world's top producers and reserve holders of many important minerals and metals, including critical minerals, which makes the Chinese mining industry very …
Evaluation of Environmental Information Disclosure of Listed Companies in China's Heavy Pollution Industries: A Text Mining-Based Methodology May 2021 Sustainability 13(10):5415
1. Introduction. Non-ferrous metal mining causes severe contamination of As and heavy metals (HMs). Due to the increasing activity and mobility in water [1,2], sediments are one of the major destinations for As and HMs migration and diffusion in the water [2,3].As and HMs accumulated in sediments are often tens or even hundreds of times the amount in water [3,4,5].
Pollution risk assessment of heavy metals (Pb, Cr, Cu, Ni, Zn, As) in sediment samples from 68 locations in the Gulf of Edremit, western Turkey, was performed using single and complex indices of ...
During 2023, the leading merger and acquisition (M&A) deal within China's mining industry was the acquisition of Shandong Iron and Steel Group Rizhao by Baoshan Iron & Steel. This acquisition deal ...
Overview of the study area. Yaojie coal mining, consisting of the Yaojie Sankuang mine and Haishiwan mine (Fig. 1), is one of the key coal bases in Gansu Province.It is located in Honggu District ...