Occurrence of organochlorine pesticide residues in biological and environmental matrices in Africa: A two-decade review

Heliyon
Chijioke OlisahAnthony I Okoh

Abstract

The widespread use of organochlorine pesticides (OCPs), essentially for the control of insects and the cultivation of food crops, has led to the pollution of ecosystems. Despite being banned several years ago in the developed world, extensive use remains ongoing on the African continent. This review summarizes the occurrence, distributions, sources, and trends of OCPs in seven environmental matrices (atmosphere, water, sediments, soils, biota, human fluids and food products) in Africa. Findings in this review revealed that α-HCH, β-HCH dichlorodiphenyltrichloroethane (DDTs), and endosulfans were the most persistent OCP residues in the African environment, particularly DDTs in breast milk samples occurring in levels above the WHO stipulated limits, thus indicating a call for concern. Also, there was paucity of data available on OCP concentrations in ambient air. Future research efforts should prioritize testing these pollutants in the atmosphere, especially in countries where they are used more frequently. While most POP analysis studies used gas chromatography coupled to electron capture detector or mass spectrometer, it is recommended that further studies should use more sensitive analytical techniques such as gas chromatograp...Continue Reading

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Citations

Sep 9, 2020·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Alejandro García RíosPatricia Landázuri
Jan 3, 2021·Environmental Science and Pollution Research International·Baskar VenkidasamyMuthu Thiruvengadam
Nov 28, 2020·Archives of Biochemistry and Biophysics·Pablo Sobrado
Mar 3, 2021·Integrated Environmental Assessment and Management·Thimo GroffenLieven Bervoets
May 17, 2021·Ecotoxicology and Environmental Safety·Chijioke OlisahGletwyn Rubidge
Oct 24, 2020·Environmental Science & Technology·Kevin B WhiteJana Klánová

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