Studies on environmental background values in China

Miao, T C; Wang, Huiqi; Zheng, Chunjiang

doi:10.1007/bf02664479

Cited by 4 publications

(3 citation statements)

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“…The concentrations of heavy metals in the Tianshan mountains were generally lower than those of the surface environment in other areas of China and abroad where there has been industrial and economic development, such as the rivers and oceans near Kolleru Lake (Adhikari et al 2009), the rivers of Latvia (Klavinš et al 2000), Monica Bay (Bay et al 2003), Mexico Bay (Morey et al 2003), and Bo ocean (Zhang et al 2013a, b). The average concentrations of heavy metals in the surface water of the Tianshan Mountains were significantly lower than those of the surface water in the eastern and central economically developing areas of China, such as Dongting Lake (Niao et al 1990), Yangtze River (Wu et al 2009), Shur River (Karbassi et al 2008), and Honghu Lake (Hu et al 2012). This indicates that the surface water of the Tianshan Mountains is clean, although the average concentrations of Pb, Hg, Cd, and Zn were slightly higher than those of some rivers of western China, such as the Shiyang and Urumqi rivers, as noted in studies by Li et al (2009) and Zhang et al (2013 a, b), respectively.…”

Section: Sectionsmentioning

confidence: 96%

“…In recent decades, the quality of water has been heavily affected by human agricultural and industrial activity. Heavy metal contamination of the water caused by this increase in human activity has become a major threat to the health of regional ecosystems (Niao et al 1990;Zenk 1996;Klavinš et al 2000;Qi et al 2002;Karbassi et al 2008). At present, heavy metal concentrations in aquatic environments have become a focus of research of the geographical, water, and environmental sciences and are also important indicators for the evaluation of the state of the regional water supply (Karbassi et al 2008;Adhikari et al 2009;Li et al 2012;Zhang et al 2013a, b).…”

Section: Introductionmentioning

confidence: 96%

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Heavy metal contamination, sources, and pollution assessment of surface water in the Tianshan Mountains of China

Zhang

Abuduwaili

Jiang

2015

Environ Monit Assess

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In order to gain insight into heavy metal contamination occurring in the surface water of the Tianshan Mountains in northwest China, we collected surface water samples from there, tested heavy metals Pb, Ni, Cd, Co, Hg, As, Cu, Mn, Zn, and Cr, and then we analyzed the data using typical analysis, multivariate statistical, and pollution index methods. Results showed that (1) the order of the average values of the ten kinds of heavy metals in all the water samples was as follows: Zn > Mn > Cu > Co > Ni > Pb > Cr > As > Hg > Cd. The maximum variation coefficients of Zn and Pb were 138.96 and 145.86 %, respectively, indicating that these heavy metal concentrations varied largely between different sampling locations. (2) Research showed the average concentrations of Pb, Cd, As, Cu, Zn, and Cr were all within the national surface water standard of class IV and those of As, Cu, Mn, and Cr were all within the range of the Drinking Water Guidelines from the WHO, indicating the surface water of the Tianshan Mountains is clean. (3) Multivariate statistical analysis showed that Cu, Cd, Mn, Hg, Zn, and Pb have close correlations, and they mainly came from artificial sources; while Ni, As, Co, Cu, and Cr mainly came from natural sources. The results of correlation analysis, principal component analysis, and cluster analysis are consistent. (4) Pollution evaluation showed the values of comprehensive pollution index (WQI) of ten kinds of heavy metals in three sections were all lower than 2, suggesting the low levels of pollution, while the over-limit ratios of Pb and Zn in water samples of the middle Urumqi-Akesu section, As in the western Zhaosu-Tekesi section, and Pb, Hg, and Zn in the eastern Balikun-Yiwu section were all above 10 %. This research shows that recent economic development of the Tianshan Mountains has negatively influenced the heavy metal concentrations in the surface water, although the concentrations of the ten kinds of tested heavy metals are relatively low.

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Section: Sectionsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 96%

Heavy metal contamination, sources, and pollution assessment of surface water in the Tianshan Mountains of China

Zhang

Abuduwaili

Jiang

2015

Environ Monit Assess

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“…Therefore, in the presence of a consistent external environment, heavy metals were enriched at different levels due to different release migration capacities and an uneven distribution of tailing sand particle size. Concurrently, the Sb and As content in all levels exceeded the standards, as per the background values of soil in the Guizhou province (Sb: 2.24 mg•kg -1 ; As: 20 mg•kg -1 ) [15]. Of which, the average concentration (4,547.82 mg•kg -1 ) of Sb was 2,030 times higher than the soil environmental background value in the Guizhou Province, and the average concentration (650.85 mg•kg -1 ) of As was 33 times higher than the background value.…”

Section: Distribution Characteristics Of Sb and As In Tailingsmentioning

confidence: 71%

Release Mechanism and Stabilization Effect of Sb and As: A Case Study of the Antimony Mine in Karst Area, Southwestern China

Ouyang¹,

Luo²,

Han³

et al. 2023

Pol. J. Environ. Stud.

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To investigate the heavy metal enrichment mechanisms and release characteristics of typical deposits in karst areas, the Sb tailing pond of Dachang, Qinglong, Guizhou Province, China, one of the three largest Sb mines in the word, was selected as the study area. In this study, samples were collected from tailings (0~120 cm) and analyzed for changes in Sb and As content at different pH values by simulated acid rain static release experiments, and solid waste materials (fly ash, quicklime, and zeolite powder) were selected to design an orthogonal test to explore the optimal stabilization effect of Sb and As. The results showed that the average contents of Sb and As exceeded background values of Guizhou soil to different degrees. The content of As leaching revealed slight differences in the leachate. Sb was sensitive to more acidic conditions, and its release content can pose an ecological risk. Further, the best stabilization effect of Sb and As was observed after adding different ratios of fly ash, quicklime, and zeolite powder for a period of maintenance, which can be used as promising stabilizing materials for mine tailings remediation. This study provides comprehensive theoretical support for enhancing source control and risk management of heavy metals.

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Spatial Distribution and Environmental Risk of Arsenic and Antimony in Soil Around an Antimony Smelter of Qinglong County

Han

Xiong

et al. 2021

Bull Environ Contam Toxicol

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Studies on environmental background values in China

Cited by 4 publications

References 0 publications

Heavy metal contamination, sources, and pollution assessment of surface water in the Tianshan Mountains of China

Heavy metal contamination, sources, and pollution assessment of surface water in the Tianshan Mountains of China

Release Mechanism and Stabilization Effect of Sb and As: A Case Study of the Antimony Mine in Karst Area, Southwestern China

Spatial Distribution and Environmental Risk of Arsenic and Antimony in Soil Around an Antimony Smelter of Qinglong County

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