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Title: Level of Organochlorine Insecticide Residues in Keitt Variety of Mango (Mangifera Indica) Fruits from the Dangme West District of Ghana
Authors: Anafi, Theresa Ansaa
Issue Date: 2-Dec-2012
Abstract: Level of organochlorine insecticide residues in mango fruits in Dangme West District of Ghana was studied. Fifty farmers were interviewed on the insecticide use practices. A total of 100 mango fruits were randomly sampled from nine conventional farms, one non-sprayed farm and two markets (in Accra and Tema). These were analyzed by gas chromatography equipped with electron capture detector for organochlorine residues. Residues detected in the mango fruits were within the European Union’s recommended Maximum Residual Limits. This indicates that the fruits are safe for consumption. However, the detection of organochlorine residues implies that these chemicals are still present in the environment. Heptachlor was highest in all three locations. The persistent nature of these chemicals is also evident as residues of alpha-HCH, gamma-HCH, delta-HCH, aldrin, heptachlor, trans-chlordane, trans-Nonachlor and o,p-DDT were detected in fruits from unsprayed farm. Residues of alpha – HCH, Endrin, Dieldrin , cis –Heptachlor epoxide, trans –Heptachlor epoxide, Hexachlorobenzene, trans – Nonachlor, o,p-DDE, p,p-DDE and o,p-DDD showed significant differences at all the three sampling locations at p<0.05. Farmers are also exposed to health risk as a result of inappropriate use of Personal Protective Equipment. Farmers also have difficulty in disposing off waste water for washing the spraying machine. Disposal of waste water into open canals can contaminate rivers and ground water. There's need for constant monitoring since there could be bioaccumulation of residues in the food chain when fruits are consumed over a long period.
Description: A thesis submitted to the College of Science, Kwame Nkrumah University of Science and Technology in partial fulfilment of the requirement for the award of Master of Science degree in Environmental Science, October-2012
URI: http://hdl.handle.net/123456789/5300
Appears in Collections:College of Science

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