Ximeng Sun

North China Institute of Science and Technology

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Chunming Hao

North China Institute of Science and Technology

Kaikai He

China Geological Survey

Yantang Wang

North China Institute of Science and Technology

Yingao Peng

Institute of Disaster Prevention

Min Liu

Hunan International Economics University

Bing Xie

North China Institute of Science and Technology

Chao Liu

Shanghai Institute of Organic Chemistry

Qianqian Sun

Xinxiang Medical University

Xing Fan

North China Institute of Science and Technology

Shuo Liu

Northeast Agricultural University

Cooperative Institutions

North China Institute of Science and Technology

Chinese Academy of Sciences

Sichuan University

Ministry of Natural Resources

Nanjing University of Information Science and Technology

Xi'an Jiaotong University

University of South China

University of Chinese Academy of Sciences

Shanghai Institute of Organic Chemistry

Tongji University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Spatial distribution, formation mechanism, and health risk assessment of high-fluoride groundwater at the largest antimony mine in Hunan Province, China

Research Square (Research Square) (2023)

Yantang Wang Chunming Hao Kaikai He Yingao Peng Ximeng Sun

Abstract To date, few systematic studies of the spatial distribution, formation mechanism, and health risks of high-fluoride (F − ) shallow groundwater in humid and semi-humid areas of the Xikuangshan antimony mine, Hunan Province, China. In this study, during March and April 2022, a total of 39 shallow groundwater samples were collected and analyzed using factor analysis, principal component analysis, and health risk assessment. F − concentrations in the shallow groundwater were found to range from 0.08 to 15.00 mg/L (mean: 1.21 mg/L), with 25.64% of the samples having F − concentrations higher than in the Chinese national standard for drinking water (1.00 mg/L). Principal component analysis revealed that the main source of F − in the shallow groundwater samples is cation exchange, accounting for 73.40%, followed by the dissolution and precipitation of F-bearing minerals (15.10%), and human influence (11.50%). Among different age groups, children had the highest percentage of individuals (36.38%) with an F − intake above the health risk quotient safety limit, followed by adult males (23.12%), teenagers (22.21%), and infants (21.22%). The findings of this study will contribute to devising strategies for the provision of safe drinking water and management of the geological environment.

Health Risk Assessment

10.21203/rs.3.rs-2847159/v1

Cite

Citations (0)

Geochemical Evolution of Antimony Content in Shallow Groundwater After Ecological Restoration Project in Xikuangshan, Hunan Province, China

Polish Journal of Environmental Studies (2023)

Ximeng Sun Yantang Wang Kaikai He Min Liu Yingao Peng

The ecological restoration project of Xikuangshan (XKS) effectively reduces environmental pollution.However, the hydrogeochemical factors and mechanisms leading to the evolution of antimony (Sb) content in shallow groundwater after ecological restoration have not been studied.In order to investigate the geochemical evolution of Sb content in shallow groundwater, 64 samples were collected before and after the ecological restoration project.The results showed Sb concentrations in shallow groundwater before and after ecological restoration were 0.006-39.160mg/L (mean 3.501 mg/L), and 0.003-17.326mg/L (mean 2.931 mg/L), respectively.The high Sb content before ecological restoration was mainly caused by the oxidation of Sb 2 S 3 , dissolution of carbonate and silicate minerals, evaporation/concentration effects, and cation exchange.The weaker oxidation of Sb 2 S 3 and effective cleaning of the arsenic alkali residue reduced the Sb content in shallow groundwater after ecological restoration.This study provides a basis for understanding the effects of ecological restoration projects on the evolution of Sb content in shallow groundwater, and provides a new idea for solving groundwater pollution and promoting groundwater resources management.

Restoration Ecology

10.15244/pjoes/169393

Cite

Citations (0)

Increase in fluoride concentration in mine water in Shendong mining area, Northwest China: Insights from isotopic and geochemical signatures

Ecotoxicology and Environmental Safety (2022)

Chunming Hao Ximeng Sun Bing Xie Shuanglin Hou

Mine water poses severe threats to the quality of the water supply and ecological environment of the Shendong mining areas owing to its excessive fluoride (F-) content. However, the geochemical behaviours and enrichment mechanisms responsible for F⁻ enrichment during mining activities are not fully understood. In total, 18 Yanan groundwater and 45 mine water samples were collected to analyse the spatial distribution, hydrogeochemical behaviours, and formation mechanisms related to elevated F- levels by analysing the stable isotopes and water-rock interactions. In this study, F- concentrations in mine water samples varied from 0.16 to 12.75 mg/L, with a mean value of 6.10 mg/L, and 77.78% of the mine water samples had a concentration that exceeded China's national standards (1.00 mg/L) for drinking water. The F- concentration was markedly high in the mine water samples, with the mean F- concentration being 1.58 times of that in the Yanan groundwater samples. The results of stable isotopes (18OH2O, D, 34SSO4, and 18OSO4) and water-rock interaction analyses suggested that cation exchange and competitive effects were the dominant factors responsible for elevated F- concentration in mine water during mining activities. Thus, the weathering of F-bearing minerals, agriculture, and domestic activities do not play a significant role in the secondary enrichment of F- concentration.

10.1016/j.ecoenv.2022.113496

Cite

Citations (23)

Migration mechanisms of soil carbon and nitrogen element during the natural restoration process in coal mining subsidence areas

Chemistry and Ecology (2024)

Yantang Wang Chunming Hao Kaikai He Qianqian Sun Feng Deng

Understanding the movement and alteration of carbon and nitrogen elements in soil is crucial for addressing ecological restoration in coal mining subsidence areas. However, the migration process and mechanisms of these elements during the natural restoration process remain unclear. This study analysed the fluctuating variations and formation mechanisms of TC and TN content in soil profiles at different restoration times in coal mining subsidence areas. Initially, both TC and TN contents decreased followed by an increase during the natural restoration process. Soil compaction effects, variation of C/N ratio, and soil enzyme activity were considered as predominant factors controlling carbon and nitrogen element cycles in collapsed soil profiles. This study will provide valuable insights into understanding the mechanisms behind carbon and nitrogen cycles during natural recovery while establishing a scientific basis for ecological restoration in coal mining subsidence areas.

Carbon fibers

10.1080/02757540.2024.2425282

Cite

Citations (0)

Morphological Distribution and Formation Mechanisms of Antimony in the Shallow Groundwater of the Xikuangshan Antimony Mine in Hunan, China

Frontiers in Environmental Science (2022)

Ximeng Sun Yi Li Chao Liu Lu Zhang Ziyao Li

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 Sb(V) and Sb(III) in shallow groundwater were still little known. Forty-three groundwater samples of Magunao aquifer (D 3 x 4 ) were collected between June and September 2020 to determine morphological distribution and formation mechanisms of Sb valence state in the recharge area, runoff area and discharge area. The range of Sb content in the recharge area, runoff area, and discharge area of the D 3 x 4 water was 3.300 × 10 −3 –7.982 mg/L, 1.760 × 10 −2 –17.326 mg/L and 1.230 × 10 −2 –16.773 mg/L, respectively. The D 3 x 4 water is dominated by Sb(V), which form was Sb(OH) 6 − . The Sb(V) mainly comes from the oxidative dissolution of Sb 2 S 3 , the mining activities, and the leaching of arsenic alkali residues. The silicate mineral weathering, carbonate mineral dissolution, and ion exchange promote the dissolution of Sb 2 S 3 . At the same time, redox and competitive adsorption in the runoff area increase the Sb(V) content in the water environment. The results of this research provide an understanding of the mechanism of Sb pollution in shallow groundwater and will help in controlling water-environment pollution and securing water-resource in mining areas.

Silicate minerals

10.3389/fenvs.2022.950096

Cite

Citations (0)

Novel insights into antimony mobilization in different high- antimony aquifers from the molecular signatures of dissolved organic matter

Ecotoxicology and Environmental Safety (2024)

Chunming Hao Qianqian Sun Ximeng Sun Qiong Li

The crucial role of the fluorescent components of dissolved organic matter (DOM) in controlling antimony (Sb) mobilization in groundwater has been confirmed. However, the molecular signatures contributing to Sb enrichment in DOM remain unknown. This study aims to investigate the origins and molecular compositions of DOM in different high-Sb aquifers (Sb-mining and no-Sb-mining aquifer), as well as compare different molecular signatures of DOM and mechanisms for Sb migration. The findings showed that Sb concentrations in Sb-mining aquifer exhibited a positive correlation with lignin- and tannin-like molecules characterized by high O/C and low H/C ratios, indicating an increased abundance of aromatic components with higher Humification Index and SUV-absorbance at 254 nm, compared to no-Sb-mining aquifer. Correspondingly, the complexation and competitive adsorption were considered as the predominate formation mechanisms on Sb enrichment in Sb-mining aquifer. In addition, high abundances of bioreactivity DOM may facilitated the migration of Sb via electron transfer and competitive adsorption in native no-Sb-mining aquifer. The outcomes of this investigation offer novel insights into the mechanism on Sb enrichment influenced by DOM at the molecule level.

Mobilization

10.1016/j.ecoenv.2024.116377

Cite

Citations (2)

Spatial distribution, formation mechanism, and health risk assessment of high-fluoride groundwater at the largest antimony mine in Hunan Province, China

Water Science & Technology Water Supply (2023)

Yantang Wang Chunming Hao Kaikai He Yingao Peng Ximeng Sun

Abstract To date, few systematic studies have been conducted of the spatial distribution, formation mechanism, and health risks of high-fluoride (F−) shallow groundwater in humid and semi-humid areas of the Xikuangshan antimony mine, Hunan Province, China. In this study, during March and April 2022, a total of 39 shallow groundwater samples were collected and analyzed using factor analysis, principal component analysis, and health risk assessment. F− concentrations in the shallow groundwater were found in the range of 0.08–15.00 mg/L (mean: 1.21 mg/L), with 25.64% of the samples having F− concentrations higher than in the Chinese national standard for drinking water (1.00 mg/L). Principal component analysis revealed that the main source of F− in the shallow groundwater samples is cation exchange, accounting for 73.40%, followed by the dissolution and precipitation of F-bearing minerals (15.10%) and human influence (11.50%). Among different age groups, children had the highest percentage of individuals (36.38%) with an F− intake above the health risk quotient safety limit, followed by adult males (23.12%), teenagers (22.21%), and infants (21.22%). The findings of this study will contribute to devising strategies for the provision of safe drinking water and the management of the geological environment.

Hazard quotient

Health Risk Assessment

10.2166/ws.2023.194

Cite

Citations (0)

Geochemical impact of dissolved organic matter on antimony mobilization in shallow groundwater of the Xikuangshan antimony mine, Hunan Province, China

The Science of The Total Environment (2022)

Chunming Hao Ximeng Sun Yingao Peng Bing Xie Kaikai He

Dissolved organic matter (DOM) is widely used in aquatic systems to control the environmental fate of As. However, similar to the behavior of As, Sb mobilization driven by DOM is poorly understood. A total of 25 samples were collected from shallow groundwater in the Xikuangshan mine to compare the spectroscopic characteristics and chemical properties of DOM between high- and low-Sb groundwater and to determine the roles of DOM in Sb mobility. The concentrations of Sb and DOM varied from 0.003 to 18.402 mg/L (mean: 3.407 mg/L) and 0.38 to 9.90 mg/L (mean: 2.49 mg/L), respectively. The DOM of the D3x4 water was primarily dominated by terrestrial and microbial humic-like and fulvic acid substances, with a relatively small contribution of tryptophan-like components. Complexing agents, competitive adsorption, and photopromoted oxidation under sunlight were considered as the formation mechanisms for DOM-controlled Sb(V)-dominated Sb species in D3x4 water. The weakly alkaline and oxidizing conditions, and the presence of Fe hydroxides facilitated the promotion of Sb(V) concentration. The findings of this study further enhance our understanding of the Sb migration mechanism in oxic groundwater.

Oxidizing agent

Mobilization

10.1016/j.scitotenv.2022.160292

Cite

Citations (11)