Arsenic accumulation and speciation in epilithic moss collected from an abandoned mercury mining area, south-western China | |
Longchao Liang; Zhidong Xu; Guangle Qiu; Pan Wu; Ruixue Zhang | |
刊名 | Atmospheric Pollution Research
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2019 | |
卷号 | 10期号:2页码:455-461 |
关键词 | Arsenic Arsenic Speciation Characteristics And Spatial Distribution Epilithic Moss Potential Sources |
英文摘要 | Arsenic (As) is considered a carcinogenic toxin, and nonferrous metal smelting activities can release significant quantities of As, causing an increase in As levels in the environment. A total of 221 samples of moss belonging to 5 species in 4 families were collected from the Wanshan District, the world third largest mercury mining area, in Guizhou Province, southwestern China, for analysis of total As (tAs) concentrations and As speciation. The results indicated that the tAs concentrations in these mosses ranged from 0.67 to 9.6 mg kg −1 , with an average of 2.4 ± 1.7 mg kg −1 . The dominant species of As in these mosses were inorganic forms of arsenite (As(III)) and arsenate (As(V)) with a total percentage of 87%, whereas the concentrations of organic forms (monomethylarsonic acid (MMA) and dimethylarsinic acid (DMA)) were relatively low, with percentages of 11.8% and 6.0%, respectively. A significant correlation (r = 0.766, p < 0.01) was observed between As(V) and tAs. In the spatial distribution pattern of As, high concentrations of As in mosses were centralized around historical Hg retorting sites in the town of Wanshan, the villages of Gouxi and Yanwuping and sites downwind of these locations, suggesting that historical intensive Hg mining activities might be the most possible source of atmospheric As. |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.gyig.ac.cn/handle/42920512-1/10404] ![]() |
专题 | 地球化学研究所_环境地球化学国家重点实验室 |
作者单位 | 1.Key Laboratory of Karst Environment and Geohazard, Ministry of Land and Resources, Guiyang 550025, China 2.Guizhou University, Guiyang 550025, China 3.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China |
推荐引用方式 GB/T 7714 | Longchao Liang;Zhidong Xu;Guangle Qiu;Pan Wu;Ruixue Zhang. Arsenic accumulation and speciation in epilithic moss collected from an abandoned mercury mining area, south-western China[J]. Atmospheric Pollution Research,2019,10(2):455-461. |
APA | Longchao Liang;Zhidong Xu;Guangle Qiu;Pan Wu;Ruixue Zhang.(2019).Arsenic accumulation and speciation in epilithic moss collected from an abandoned mercury mining area, south-western China.Atmospheric Pollution Research,10(2),455-461. |
MLA | Longchao Liang;Zhidong Xu;Guangle Qiu;Pan Wu;Ruixue Zhang."Arsenic accumulation and speciation in epilithic moss collected from an abandoned mercury mining area, south-western China".Atmospheric Pollution Research 10.2(2019):455-461. |
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