Pesticide Analysis in Ethiopian Vegetables

The chemicals and reagents used for this study were as follows: analytical grade n-hexane, acetone, acetonitrile, methanol, glacial acetic acid, and for cleanup purposes, anhydrous magnesium sulfate, sodium acetate, and florisil, and for centrifugation, 50 ml and 15 ml centrifuge tubes were used. Commonly studied pesticides by different scholars in Ethiopia were used to be studied in this study, which include o,p'-DDT, p,p'-DDT, p,p'-DDE, p,p'-DDD, cypermethrin, and deltamethrin, which were identified from different food matrices and water by [11 (link), 18 (link), 19 (link)] and expected to be detected in commonly consumed vegetables. In addition, other pesticides were selected based on the availability of their standards. Therefore, eight organochlorine pesticides and metabolites including o,p'-DDT, p,p'-DDT, p,p'-DDE, p,p'-DDD, γ-chlordane, dimethachlor, lindane, and heptachlor and two pyrethroids (cypermethrin and deltamethrin) were selected for this study. The analytical purity of those pesticide standards, extraction solvents, and salts was greater than 98%.

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Terfe A., Mekonen S, & Jemal T. (2023). Pesticide Residues and Effect of Household Processing in Commonly Consumed Vegetables in Jimma Zone, Southwest Ethiopia. Journal of Environmental and Public Health, 2023, 7503426.

Publication 2023

Acetone Acetonitrile Centrifugation Chlordane Cypermethrin Deltamethrin Florisil Food Glacial acetic acid Heptachlor Hexane Lindane Magnesium sulfate Methanol O p ddt P p dde P p ddt Pesticide Pyrethroids Salts Sodium acetate Solvents Vegetables

Corresponding Organization : Arba Minch University

Other organizations : Water and Land Resource Centre, Addis Ababa University, Jimma University

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Variable analysis

independent variables

Presence of different pesticides (o,p'-DDT, p,p'-DDT, p,p'-DDE, p,p'-DDD, γ-chlordane, dimethachlor, lindane, heptachlor, cypermethrin, and deltamethrin)

dependent variables

Detection and quantification of pesticides in commonly consumed vegetables

control variables

Analytical grade of n-hexane, acetone, acetonitrile, methanol, glacial acetic acid, anhydrous magnesium sulfate, sodium acetate, and florisil used for sample preparation and cleanup
Purity of pesticide standards, extraction solvents, and salts (greater than 98%)
Use of 50 ml and 15 ml centrifuge tubes for centrifugation

controls

No positive or negative controls were explicitly mentioned in the provided information.

Annotations

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Etiam vel ipsum. Morbi facilisis vestibulum nisl. Praesent cursus laoreet felis. Integer adipiscing pretium orci. Nulla facilisi. Quisque posuere bibendum purus. Nulla quam mauris, cursus eget, convallis ac, molestie non, enim. Aliquam congue. Quisque sagittis nonummy sapien. Proin molestie sem vitae urna. Maecenas lorem.

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