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Ali Hussien Leta Seyoum Hussen Ahmed Alemu Tadesse 《Journal of Material Cycles and Waste Management》2023,25(4):2417-2430
Journal of Material Cycles and Waste Management - Increasing waste production and its disposal into the environment without treatment and resource recovery is considered as a threat to the... 相似文献
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Upper Awash Agro Industry Enterprises (UAAIE) is one of the major state farms in Ethiopia with known large-scale pesticide use. Although organochlorine pesticides (OCPs) have been applied for about three decades, no studies have been carried out on levels of residue in the region. In this work a fast selective pressurised liquid extraction (SPLE) methodology has successfully been applied for screening of 13 OCPs in 12 soil samples from different fields in UAAIE, which further strengthen this methodology. Quantitative and qualitative analyses were done using a dual column gas chromatography-electron capture detection system (GC-ECD) and a GC equipped with a mass spectrometer (MS), respectively. The main contaminants identified comprised of previously used persistent organic pollutants (POPs) and currently used insecticides. Low concentrations or non-detectable levels of certain OCPs (aldrin, dieldrin, endrin, and heptachlor) indicate a positive phasing out of these persistent organic pollutants (POPs). Similarly HCHs were found in few soils and at low concentrations. Endosulfans and DDTs were detected in substantial amounts in the soils with Sigmaendosulfans up to 56000 and SigmaDDTs up to 230 ng g(-1) dry weight, which is a threat to the surrounding and downstream ecosystems, especially considering that the investigated OCPs constituted 29000 l of the 63000 l of pesticide applied annually on the fields. Additional concerns must be raised concerning synergistic effects of all pesticides added. 相似文献
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Hassen Bantamlak Leta Seyoum Hussen Ahmed Alemu Tadesse 《Journal of Material Cycles and Waste Management》2023,25(4):2350-2364
Journal of Material Cycles and Waste Management - This study aimed to determine the quantity and quality of source separated organic household solid waste (SSOHSW) generation in Addis Ababa,... 相似文献
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