Effect of molecular properties of dissolved organic matter on trace metal solubility in natural waters and wastewater effluents

DOI

Bibliographic Information

Other Title
  • 自然水および下水処理水中の微量金属の溶解性に及ぼす溶存有機物の分子特性の影響

Abstract

Chemical reactivity, bioavailability, and mobility of trace metals in aquatic systems are strongly influenced by complexation with dissolved organic matter (DOM). A monitoring survey has been conducted in the Sagami River basin to elucidate the relation between trace metal solubility and DOM molecular properties in natural waters and wastewater effluents. For all the samples collected and analyzed, the concentrations of dissolved copper (Cu) and iron (Fe), both of which are normalized to dissolved organic carbon concentration, were found to be strongly positively correlated with SUVA254, an optical index representing DOM aromaticity. Calculation using a chemical equilibrium speciation model predicted that the majority of these dissolved metals are present as the complex with DOM in these samples. It can be concluded that the amount of trace metals (Cu, Fe) complexed with an unit mass of DOM is identically controlled by DOM aromaticity in a range of natural waters and wastewater effluents.

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Details 詳細情報について

  • CRID
    1390001205735702144
  • NII Article ID
    130005492319
  • DOI
    10.14862/geochemproc.62.0_263
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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