Levels and chemo dynamics of pesticide residues in eastern lake Tanganyika basin, Tanzania

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dc.contributor.authorNambela, Lutamyo
dc.date.accessioned2019-11-08T08:49:42Z
dc.date.accessioned2020-01-07T15:45:23Z
dc.date.available2019-11-08T08:49:42Z
dc.date.available2020-01-07T15:45:23Z
dc.date.issued2014
dc.descriptionAvailable in print form, East Africana Collection, Dr. Wilbert Chagula Library, Class mark (THS EAF SB950.3.T34N35)en_US
dc.description.abstractThis thesis reports on levels and chemodynamics of pesticide residues in eastern Lake Tanganyika basin of Tanzania. The aim of this study was to investigate the types, levels and distribution of pesticide residues in environmental samples. Water, soil, sediments and fish samples were collected from Kigoma region during April and June and analysed for pesticide residues. Six different types of pesticide residues and metabolites were detected, namely, p,p’-DDT, o,p’-DDT, p,p’-DDE, p,p’-DDD, diazinon and chlorpyrifos. DDT, DDD and DDE were the predominantly detected compounds in all of the samples. Diazinon and chlorpyrifos were detected in soil samples collected from vegetable and coffee farms. The highest concentrations of total DDT in sediment, soil, fish and water samples were up to 120 µg/kg dw, 564.13 µg/kg dw, 339 µg/kg fw and 221 ng/L, respectively. Chlorpyrifos and diazinon had concentrations up to 184 and 36 µg/kg dw, respectively. The distribution of DDT residues levels among sample matrices were soil > fish > sediment > water. Highest concentrations of DDT residues were detected in soil samples collected from tobacco farms and lowest concentrations of DDT residues were detected in water samples collected from tomato farm. The ratios of (p,p’- DDE + p,p’-DDD)/p,p’-DDT indicate recent inputs in most samples. The study reveals that there is recent use of DDT, diazinon and chlorpyrifos in Kigoma region. Continued use of DDT indicates risks and may result into serious environmental problems. The area therefore needs serious environmental monitoringen_US
dc.identifier.citationNambela, L. (2014) Levels and chemo dynamics of pesticide residues in eastern lake Tanganyika basin, Tanzania, Master dissertation, University of Dar es Salaam, Dar es Salaamen_US
dc.identifier.urihttp://localhost:8080/xmlui/handle/123456789/1650
dc.language.isoenen_US
dc.publisherUnversity of Dar es Salaamen_US
dc.subjectPesticidesen_US
dc.subjectEnvironmental aspecten_US
dc.subjectEastern Lake Tanganyika Basinen_US
dc.subjectTanzaniaen_US
dc.titleLevels and chemo dynamics of pesticide residues in eastern lake Tanganyika basin, Tanzaniaen_US
dc.typeThesisen_US
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