Trace Elements in Water, Sediments and the Elongate Tigerfish Hydrocynus forskahlii (Cuvier 1819) from Lake Turkana, Kenya Including a Comprehensive Health Risk Analysis

Elick O. Otachi, Christof Plessl, Wilfried Körner, Annemariè Avenant-Oldewage, Franz Jirsa

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

This study presents the distribution of 17 major and trace elements in surface water, sediments and fish tissues from Lake Turkana, Kenya. Eight sediment and ten water samples from the west bank of the lake, as well as 34 specimens of the elongate tigerfish Hydrocynus forskahlii caught in that region were examined. It is the first report for Li, Rb, Sr, Mo from the lake and the first report on most of the trace elements for this fish species. The concentrations of elements in the water and sediments showed no sign of pollution. In fish muscle, Li, Zn and Cd showed relatively high abundances, with mean concentrations of 206, 427 and 0.56 mg/kg dw, respectively. The calculated target hazard quotient values for Li, Zn, Sr and Cd were 138.7, 1.9, 4.1 and 0.76, respectively; therefore the consumption of these fish poses a health risk to humans in the area.

Original languageEnglish
Article number1603
Pages (from-to)286-291
Number of pages6
JournalBulletin of Environmental Contamination and Toxicology
Volume95
Issue number3
DOIs
Publication statusPublished - 1 Sept 2015

Keywords

  • Hydrocynus forskahlii
  • Lake Turkana
  • Target hazard quotient (THQ)
  • Trace elements

ASJC Scopus subject areas

  • Toxicology
  • Pollution
  • Health, Toxicology and Mutagenesis

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