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Environmental Science and Pollution Research

, Volume 26, Issue 31, pp 32420–32431 | Cite as

Spatial and temporal variations of sediment metals in the Tuul River, Mongolia

  • Tseren-Ochir Soyol-Erdene
  • Saulwood LinEmail author
  • Enkhdul Tuuguu
  • Dorj Daichaa
  • Kuo-Ming Huang
  • Ulziibat Bilguun
  • Enkh-Amgalan Tseveendorj
Research Article
  • 111 Downloads

Abstract

Mongolia has been a pristine environment without much pollution. Our objective is to study a section of the Tuul River to evaluate the present condition of this pristine environment. Sediment metal (Al, Fe, Mn, Cu, Zn, Pb, Ni, Cd, Hg, and Cr) concentrations and Pb-210 were sampled and analyzed. Results showed that metal concentrations are much higher at areas near the capital city and municipal sewage outlet, with enrichment factor values up to 18 for Cu, and 26 for Cr. Higher copper concentrations were found at sites about ~ 50 km downstream from the source, an indication that pollutions are spreading further down the river. Vertical metal concentration profiles indicated that pollutions could be traced back to the 1960s. Inefficient sewage treatment plants and poorly managed power plant ash ponds were major sources of metals leaking into the Tuul River. Sewage wastewater is carrying metals through Tuul River to the lower river basin. Dusts from ash ponds are airborne and transport to greater area. These findings indicate that new and alternative measures have to be enforced to prevent further pollution entering the Tuul River drainage basin and airborne dust to other broader regions of the Asia and ocean.

Keywords

Metal pollution Sediment Aerosol Sewage waste Ash pond 

Notes

Funding information

Financial support was provided by the collaborated research grant of Ministry of Science and Technology of Taiwan (102-2923-M-002-002-MY; 105-3113M002-004) and Ministry of Education, Culture and Sciences of Mongolia (NCS-NECS2013003). This work was also co-funded by the Asian Research Center of National University of Mongolia (ARC-2014-9).

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Environmental and Forest Engineering, School of Engineering and Applied SciencesNational University of MongoliaUlaanbaatarMongolia
  2. 2.Institute of OceanographyNational Taiwan UniversityTaipeiTaiwan
  3. 3.Department of Chemical and Biological Engineering, School of Engineering and Applied SciencesNational University of MongoliaUlaanbaatarMongolia
  4. 4.Department of Applied GeomaticsChien-Hsin University of Science and TechnologyTaoyuan CityTaiwan
  5. 5.Institute of Geography and GeoecologyMongolian Academy of SciencesUlaanbaatarMongolia

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