Distribution of mercury in the sediments of some freshwater bodies in Ethiopia

Kebede Nigussie Mekonnen, Abayneh Ataro Ambushe, Bhagwan Singh Chandravanshi, Mesfin Redi Abshiro, Robert Ian McCrindle, Nikolay Panichev

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Sediment samples were collected from Tinishu Akaki River (TAR), Lake Awassa, and Lake Ziway, Ethiopia for determination of mercury. The air-dried samples were analyzed for mercury with a differential atomic absorption spectrometer after thermal evaporation of bound mercury converting it to its atomic form. Certified reference materials (CRMs) of sediments and soils were used to validate the method. The recovery of mercury from CRMs and sediments was in the range of 95-100%. The limit of detection for the determination of mercury was 50 ng kg -1. The concentration of total mercury in the sediments varied from 3.9 to 110 μg kg -1 for TAR, 14 to 67 μg kg -1 for Lake Awassa, and 17 to 110 μg kg -1 for Lake Ziway. It was found that the total mercury concentrations in all samples were below the United States Environmental Protection Agency guideline of 200 μg kg -1.

Original languageEnglish
Pages (from-to)1678-1687
Number of pages10
JournalToxicological and Environmental Chemistry
Issue number9
Publication statusPublished - Oct 2012
Externally publishedYes


  • differential atomic absorption spectrometry
  • Lake Awassa
  • Lake Ziway
  • mercury
  • sediment
  • Tinishu Akaki River

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution
  • Health, Toxicology and Mutagenesis


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