Biogeochemical interactions among the arsenic, iron, humic substances, and microbes in mud volcanoes in southern Taiwan
Article
Article Title | Biogeochemical interactions among the arsenic, iron, humic substances, and microbes in mud volcanoes in southern Taiwan |
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ERA Journal ID | 36368 |
Article Category | Article |
Authors | Liu, Chia-Chuan (Author), Maity, Jyoti Prakash (Author), Jean, Jiin-Shuh (Author), Sracek, Ondra (Author), Kar, Sandeep (Author), Li, Zhaohui (Author), Bundschuh, Jochen (Author), Chen, Chien-Yen (Author) and Lu, Hsueh-Yu (Author) |
Journal Title | Journal of Environmental Science and Health Part A: Toxic Hazardous Substances and Environmental Engineering |
Journal Citation | 46 (11), pp. 1218-1230 |
Number of Pages | 13 |
Year | 2011 |
Publisher | Taylor & Francis |
Place of Publication | United Kingdom |
ISSN | 1093-4529 |
1532-4117 | |
Digital Object Identifier (DOI) | https://doi.org/10.1080/10934529.2011.598793 |
Web Address (URL) | http://www.tandfonline.com/doi/full/10.1080/10934529.2011.598793 |
Abstract | Fluid and mud samples collected from Hsiaokunshui (HKS), Wushanting (WST), Yenshuikeng (YSK), Kunshuiping (KSP), Liyushan (LYS), and Sinyangnyuhu (SYNH) mud volcanoes of southwestern Taiwan were characterized for major ions, humic substances (HS) and trace elements concentrations. The relationship between the release of arsenic (As) and activities of sulfate-reducing bacteria has been assessed to understand relevant geochemical processes in the mud volcanoes. Arsenic (0.02-0.06 mg/L) and humic substances (4.13 × 10 -4 to 1.64 × 10 -3 mM) in the fluids of mud volcanoes showed a positive correlation (r = 0.99, p 0.05) except in Liyushan mud volcano. Arsenic and iron in mud sediments formed two separate groups i) high As, but low Fe in HKS, WST, and SYNH; and ii) low As, but high Fe in the YSK, KSP, and LYS mud volcanoes. The EhS.H.E. values of the mud volcano liquids were characterized by mild to strongly reducing conditions. The HKS, SYNH, and WST mud volcanoes (near the Chishan Fault) belongs to strong reducing environment (-33 to-116 mV), whereas the LYS, YSK, and KSP mud volcanoes located near the coastal plain are under mild reducing environment (-11 to 172 mV). At low Eh values mud volcanoes, saturation index (SI) values of poorly crystalline phases such as amorphous ferric hydroxide indicate understaturation, whereas saturation is reached in relatively high EhS.H.E. values mud volcanoes. Arsenic contents in sediments are low, presumably due to its release to fluids (As/Fe ratio in YSK, KSP, and LYS sediment: 4.86 × 10 -4-6.20 × 10 -4). At low EhS.H.E. values (mild to strong reducing environment), arsenic may co-precipitate with sulfides as a consequence of sulfate reduction (As/Fe ratios in WST, HKS, and SYNH sediments: 0.42-0.69). |
Keywords | arsenic; biogeochemistry; humic substances; bacterial activity; volcanic fluids; Taiwan |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 410402. Environmental assessment and monitoring |
370302. Inorganic geochemistry | |
410406. Natural resource management | |
410404. Environmental management | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | National Cheng Kung University, Taiwan |
National Chung Cheng University, Taiwan | |
Palacky University Olomouc, Czech Republic | |
University of Wisconsin-Madison, United States | |
Karlsruhe University of Applied Sciences, Germany | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2921/biogeochemical-interactions-among-the-arsenic-iron-humic-substances-and-microbes-in-mud-volcanoes-in-southern-taiwan
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