文献类型：期刊文献

英文题名：Barium concentrations and speciation in surface waters collected from an active barium mining area in Guizhou Province, southwestern China

作者：Lu, Qinhui Xu, Xiaohang Xu, Zhidong Liang, Longchao Shang, Lihai Xiao, Dean Zhang, Sensen Jiang, Yuping Qiu, Guangle

第一作者：Lu, Qinhui

通信作者：Qiu, GL[1]

机构：[1]Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, 99 Lincheng West Rd, Guiyang 550081, Guizhou, Peoples R China;[2]Univ Chinese Acad Sci, Beijing 100049, Peoples R China;[3]Guizhou Univ, Coll Resource & Environm Engn, Guiyang 550025, Guizhou, Peoples R China;[4]Guizhou Inst Technol, Coll Resource & Environm Engn, Guiyang 550003, Guizhou, Peoples R China;[5]Res Ctr Appl Geochem & Technol, Zhengzhou 450052, Henan, Peoples R China;[6]Henan Prov Nonferrous Met Geol & Mineral Resourc, Geol Survey Div 6, Zhengzhou 450052, Henan, Peoples R China

第一机构：Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, 99 Lincheng West Rd, Guiyang 550081, Guizhou, Peoples R China

通信机构：corresponding author), Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, 99 Lincheng West Rd, Guiyang 550081, Guizhou, Peoples R China.

年份：2018

卷号：25

期号：8

起止页码：7608-7617

外文期刊名：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH

收录：;EI(收录号：20242616414457);Scopus(收录号：2-s2.0-85039544709);WOS:【SCI-EXPANDED(收录号:WOS:000427398200048)】；

基金：This study was supported by the Opening Fund of the State Key Laboratory of Environmental Geochemistry (SKLEG2017904). The authors gratefully acknowledge the support of all persons involved in the project.

语种：英文

外文关键词：Barium; Species; Multivariate statistical analysis; PHREEQC Program; mining activities

摘要：Barium (Ba) is a toxic element and can cause serious health effects. Humans have experienced increased exposure to Ba due to its intensive usage in industrial areas and daily life. Anthropogenic activities of Ba mining and the manufacture of Ba containing products introduce the element into surrounding areas, posing environmental concerns. Concentrations of total Ba (TBa) and dissolved Ba (DBa) in water samples collected from active Ba mines in Tianzhu, east Guizhou Province, southwestern China were measured to show the regional dispersion of Ba contamination. Aqueous Ba species in water were calculated using the PHREEQC program. The results showed that TBa and DBa concentrations ranged from 6.7 to 483.1 mu g/L and from 7.5 to 222.7 mu g/L, respectively. TBa concentrations presented a high average value of 126.6 mu g/L and greatly exceeded the reported common value of 10 mu g/L Ba in surface water set by the Ministry of Environment Protection of China. PHREEQC results indicated that Ba species in water were present as Ba2+, BaSO4, BaHCO3, BaCO3, and BaOH+. The distribution of Ba species in water is controlled by pH and total organic carbon (TOC), and the lower pH (pH < 7) the higher the dissolved fractions. The log K-d values (K (d) , dissolved-particulate distribution coefficients) varied from 2.41 to 6.32. Significant correlations were observed among Ba2+ and K+, Na+, Cl-, NO3-, with Pearson correlation coefficients of 0.425, 0.531, 0.853, 0.612, and 0.329, respectively (p < 0.01). Elevated Ba concentrations in water indicated that the Ba contamination and its distribution pattern in local aquatic ecosystems are derived from Ba mining sites in the Tianzhu area.