ArticleDiscover Environment2025
Occurrence and risk assessment of organochlorine pesticides in River Rwizi sediment in Western Uganda.
Article in Discover Environment, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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4 authors.
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Abstract
Fifteen organochlorine pesticides (OCPs) were determined in sediments from 14 sites in upper, middle and lower reaches of River Rwizi. Duplicate samples were collected at each site, during three sampling regimes covering the wet and dry seasons. Sediments were extracted using acetone: hexane (1:1 mixture) and clean-up was achieved using C18 cartridge. OCPs were determined using gas chromatography-mass spectrometry (GC-MS). Principal component analysis (PCA) was used to assess spatial relationships. To assess ecological health risk, the risk quotient (RQ) based on exposure and toxicity was calculated. Hazard index (HI), based on the sum of ratios of the OCP doses to permitted levels was calculated assess risk to human health. Recoveries of 54.4-93%, linearity (R Supplementary Information: The online version contains supplementary material available at 10.1007/s44274-025-00465-7.
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