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High arsenic (As) levels occur naturally in geothermal areas, potentially polluting downstream wetland ecosystems. The study was to determine the distribution of As among aqueous, solid, and plant phases in the Guandu Wetland of Taiwan. Chemical compounds (As, Fe, Mn, TOC, SO42-, and FeS2) and isotopic compositions (δ34S) in water and soil samples were analyzed to characterize the As distribution...
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