Atmospheric pollution indicated by trace elements in snow from the northern slope of Cho Oyu range, Himalayas

Liu, Yaping; Hou, Shugui; Hong, Sungmin; Hur, Soon-Do; Lee, Khanghyun; Wang, Yetang

doi:10.1007/s12665-010-0714-0

Cited by 23 publications

(6 citation statements)

References 46 publications

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“…The relationship between enrichment factors of each element and Al concentrations suggested that anthropogenic activities mainly contributed to trace element inputs during both non-monsoon and monsoon seasons. Liu et al (2011) reported the concentrations of trace metals in snowpit from Gyabrag glacier ranged from 0.5 (Sb) to 4598 (Mn) ng/kg. Mn was the dominant element in the snowpit.…”

Section: Major and Trace Elements In Environmental Media Of The Qinghmentioning

confidence: 99%

Inorganic pollution around the Qinghai-Tibet Plateau: An overview of the current observations

Duan

Lü

et al. 2016

Science of The Total Environment

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The Qinghai-Tibet Plateau is the highest geographical unit in the world. Thus, it serves an important role in evaluating long-term ecologic conditions and environmental status and changes over time. This study summarizes major and trace element concentrations in biota and in water and soil. It also pays attention to gaseous pollutant and particle concentrations in air around the Qinghai-Tibet Plateau. The degree of soil heavy metal contamination and the water heavy metal hazard index were respectively evaluated. The contamination degrees of two sampling areas around the Qinghai-Tibet Plateau reached extremely high levels with soil mC d (modified degree of contamination) values exceeding 20. Surprisingly, over 54% of sampling areas showed moderate or more serious soil contamination degree (mC d N 1.5). Moreover, the hazard indexes of two important rivers were 1.56 and 7.59, reaching unacceptable level. The potential risk might be beyond our expectation. Therefore, it should be an urgent and top priority to identify and confirm possible pollution sources around the Qinghai-Tibet Plateau. Then, it is imperative to implement feasible and effective environmental quality control strategies.

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Section: Major and Trace Elements In Environmental Media Of The Qinghmentioning

confidence: 99%

Inorganic pollution around the Qinghai-Tibet Plateau: An overview of the current observations

Duan

Lü

et al. 2016

Science of The Total Environment

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“…Water-soluble ions and the trace elements play key roles in many atmospheric processes, such as cloud formation, solar radiation, and haze formation because of their affinity with water (Cong et al, 2015;Deng et al, 2011;Cheng et al, 2012). Recent studies demonstrated that increasing industrial development has increased the anthropogenic chemical species from various sources in East Asia, especially in the industrial areas across northern China (Wei and Yang, 2010;Duan and Tan, 2013;Lee et al, 2008;Liu et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Water-soluble ions and trace elements in surface snow and their potential source regions across northeastern China

Wang

Zhang

et al. 2015

Atmospheric Environment

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h i g h l i g h t sWe collected 92 snow samples from 13 sites across northeastern China. The snow in the remote northeast on the border near Siberia was extremely clean. Al, and Fe were primarily derived from natural sources. Cu, Zn, As, V, and Cd in snow samples were likely derived from anthropogenic sources. a b s t r a c tWe collected 92 snow samples from 13 sites across northeastern China from January 7 to February 15, 2014. The surface snow samples were analyzed for the major water-soluble ions (SO 2À 4 , NO À 3 , F e , Cl e , Na þ , K þ , Ca 2þ , Mg 2þ , and NH þ 4 ) and trace element (Al, As, Mn, V, Cd, Cu, Pb, Zn, Fe, Cr, and Ni). The results indicated that the higher concentrations of NO À 3 and SO 2À 4 and the trace elements Zn, Pb, Cd, Ni, and Cu were likely attributable to enhanced local industrial emissions in East Asia especially in China. In addition, snow samples characterized by higher enrichment factors of trace elements (Cu, Cd, As, Zn, Pb) were indicative of an anthropogenic source. Emissions from fossil fuel combustion and biomass burning were likely important contributors to the chemical elements in seasonal snow with long-range transport. On the other hand, the large attribution of K þ appeared in the higher latitude demonstrated that biomass burning was a dominated factor of the chemical species in seasonal snow in the higher latitude of China than that in the lower latitude. Finally, an interannual comparison with the 2010 China snow survey also confirmed the source attributions of chemical speciation in seasonal snow in these regions.

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“…These results indicated that 22 sampling points (e.g., T 5 –T 8 , G 5 –G 7 , D 9 , K 2 , L 4 ) belonged to the first category; 14 sampling points (e.g., D 1 –D 6 , L 2 , T 9 ) belonged to the second category; X 1 –X 4 , G 4 , T 10 , K 4 , D 8 and the other 19 elements were classified as the third category; T 4 , K 7 belonged to the fourth category. These results may have been the result of changes in hydrological and hydrodynamic conditions, as well as gravitational flows caused by the tilt of the lake bottom [ 52 ].…”

Section: Resultsmentioning

confidence: 99%

“…Meanwhile, some lakes in the study area are well-known tourist attractions, with tourists and cars constantly moving through the area. Fuel combustion, oil combustion, and brake pad wear will cause enrichment of Cd, Pb, Zn, Cu, and other elements [ 52 ]. For example, the emission of Zn in automobile lubricants, the decomposition of trace element components in automobile tires, Cd is mostly derived from engine oils, abrasion of brake linings, and tearing of tires, and the emission of Cd and Cu will all cause enrichment of relevant trace elements [ 48 , 53 ].…”

Section: Resultsmentioning

confidence: 99%

Geochemical and Statistical Analyses of Trace Elements in Lake Sediments from Qaidam Basin, Qinghai-Tibet Plateau: Distribution Characteristics and Source Apportionment

Wei

Wang

et al. 2022

IJERPH

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The safety of lake ecosystems on the Qinghai-Tibet Plateau (QTP) has attracted increasing attention, owing to its unique location and ecological vulnerability. Previous studies have shown that the aquatic systems on the QTP have been polluted to varying degrees by trace elements. However, little is known of the distribution and sources of trace elements in lakes in the northeast QTP. Here, 57 sediment samples were collected from six lakes (Dasugan Lake, Xiaoqaidam Lake, Kreuk Lake, Toson Lake, Gahai Lake and Xiligou Lake) in the Qaidam Basin, northeast QTP, and the trace elements (V, Cr, Ni, Cu, Zn, As, Ba, Tl, Cd, Pb, and U) were analyzed. The results indicated that Ba, Zn, V, and Cr had a higher content and a wider distribution relative to the other tested elements. Correlation coefficient matrix results showed that the trace elements in the study area were strongly correlated, revealing their source of similarity. Self-organizing maps (SOM, an artificial neural network algorithm) results indicated that the degree of pollution in Xiaoqaidam Lake was the highest, and that of Dasugan Lake was the lowest. Furthermore, all sampling points were clustered into four categories through K-means clustering. The positive matrix factorization (PMF) results indicated that atmospheric deposition and anthropogenic inputs were the main trace elements sources in these lakes, followed by traffic emission and geological sources. Collectively, trace elements of six lakes in Qinghai-Tibet Plateau presented high-content and pollution characteristics. This research provides a scientific basis for better water environment management and ecological protection on the QTP.

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Atmospheric pollution indicated by trace elements in snow from the northern slope of Cho Oyu range, Himalayas

Cited by 23 publications

References 46 publications

Inorganic pollution around the Qinghai-Tibet Plateau: An overview of the current observations

Inorganic pollution around the Qinghai-Tibet Plateau: An overview of the current observations

Water-soluble ions and trace elements in surface snow and their potential source regions across northeastern China

Geochemical and Statistical Analyses of Trace Elements in Lake Sediments from Qaidam Basin, Qinghai-Tibet Plateau: Distribution Characteristics and Source Apportionment

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