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July 1, 2026Scientific ReportsOpen Access

Occurrence and human health risk assessment of organochlorine pesticides in irrigated and non-irrigated agricultural soils of Wondogenet District, Ethiopia

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Authors

YBYohannes Seifu BeregoHawassa UniversitySRSisay Shediso RorisoHawassa UniversityAYAmanuel YosephWestern University

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Overview

Randomized trial assesses health risks from organochlorine pesticides in irrigated and non-irrigated farms, suggesting need for better pesticide management.

Key Points

  • This research aimed to quantify organochlorine pesticide residues in agricultural soils and evaluate potential human health risks from exposure in Wondogenet District, Ethiopia.
  • Sampled 30 surface soil samples from irrigated and non-irrigated khat farms during the 2024 growing season.
  • Analyzed 20 organochlorine pesticides using gas chromatography–mass spectrometry following USEPA Method 3540.
  • Estimated chronic daily intake, hazard quotient, hazard index, and total carcinogenic risk via USEPA models.
  • Detected all target organochlorine pesticides except α-BHC and endrin ketone, with higher concentrations in irrigated soils.
  • Non-carcinogenic risk estimates remained below threshold levels (HQ, HI < 1).
  • Carcinogenic risk for heptachlor and p, p′-DDD in adults fell within the upper range of USEPA benchmarks, indicating elevated model-based risk.

Cite This Study

Berego et al. (2026) studied this question.

synapsesocial.com/papers/6a44ad765cd2549c8bc430cdhttps://doi.org/10.1038/s41598-026-60251-0
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  1. 1Residues of organochlorine pesticides in aquatic ecosystems of Southwestern Ethiopia: implications for ecological risks.2026
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  4. 4Exposure to DDT and HCH congeners and associated potential health risks through khat (Catha edulis) consumption among adults in South Wollo, Ethiopia2021 · 13 citations
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