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May 16, 2026Measurement FoodOpen Access

Organochlorine Pesticide Residues in Water, Sediment, and Fish of Gilgel Gibe Reservoir and Tributaries, Ethiopia: Levels, Distribution and Risk Assessment

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Authors

YBYerosan Buzeyo BalchaJimma UniversityTBTokuma Negisho BayissaJimma UniversitySGSintayehu GashawJimma University

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Implication

Investigation measures organochlorine pesticide levels in water, sediment, and fish, indicating low health risks for consumption.

Key Points

  • This research aims to analyze the levels and distribution of organochlorine pesticide residues in water, sediment, and fish from Gilgel Gibe Reservoir and its tributaries.
  • 42 samples analyzed: 12 water, 12 sediment, and 18 fish specimens.
  • Organochlorine pesticides were extracted using liquid-liquid microextraction for water and Soxhlet extraction for sediment and fish.
  • Analysis conducted using gas chromatography-mass spectrometry.
  • Gamma-hexachlorocyclohexane was highest in Yadi River water at 10.97 µg/L.
  • Health Risk Index for fish species remained below critical value of 1, indicating no health risk for human consumption.
  • African catfish exceeded maximum residue limit for heptachlor epoxide at 225.22 µg/kg.

Cite This Study

Balcha et al. (2026) studied this question.

synapsesocial.com/papers/6a080b17a487c87a6a40d1adhttps://doi.org/10.1016/j.meafoo.2026.100294
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