Organochlorine Pesticide Residues in Sediments and Biota from the Coastal Area of Dar Es Salaam City, Tanzania

Simple item page
dc.contributor.authorMwevura, Haji
dc.contributor.authorOthman, Othman C.
dc.contributor.authorMhehe, George L.
dc.date.accessioned2016-09-25T18:54:38Z
dc.date.available2016-09-25T18:54:38Z
dc.date.issued2002
dc.descriptionFull text can be accessed at http://www.sciencedirect.com/science/article/pii/S0025326X01003319en_US
dc.description.abstractSediment and biota samples were collected from Msimbazi and Kizinga rivers and from the coastal marine environment of Dar es Salaam during both dry and wet seasons. The samples were analyzed for various organochlorine pesticide residues using GC-ECD and GC-MS. Dieldrin, p,p′-DDT, p,p′-DDE, p,p′-DDD, o,p′-DDT and γ-HCH were detected at significantly greater concentrations above the method detection limits. Recoveries of pesticide residues ranged 86.5–120% in sediments and 62–102% in biota. The average concentrations of total DDT in sediments for the two seasons were almost the same. Biota samples showed significant difference in levels of residues depending on mode of feeding and age of analyzed biota. p,p′-DDT to total DDT ratios in all matrices indicated recent use of DDT. The levels of residues in sediments suggest possible adverse effects to humans consuming biota that are directly exposed to the sediments. This effect, which is associated with bio-concentration of residues in the tissues of edible aquatic biota, should not affect wildlife. In spite of concern on the adverse effect to humans posed by pesticide residues in sediments, edible biota from the examined water bodies were found to be safe for human consumption.en_US
dc.identifier.citationMwevura, H., Othman, O.C. and Mhehe, G.L., 2002. Organochlorine pesticide residues in sediments and biota from the coastal area of Dar es Salaam city, Tanzania. Marine Pollution Bulletin, 45(1), pp.262-267.en_US
dc.identifier.doi10.1016/S0025-326X(01)00331-9
dc.identifier.urihttp://hdl.handle.net/20.500.11810/4275
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectSedimenten_US
dc.subjectBiotaen_US
dc.subjectOrganochlorineen_US
dc.subjectPesticidesen_US
dc.subjectPollutionen_US
dc.subjectMarineen_US
dc.subjectBaseline studiesen_US
dc.subjectTanzaniaen_US
dc.titleOrganochlorine Pesticide Residues in Sediments and Biota from the Coastal Area of Dar Es Salaam City, Tanzaniaen_US
dc.typeJournal Article, Peer Revieweden_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Organochlorine pesticide residues in sediments and biota from the coastal area of Dar es Salaam city.pdf
Size:
127.82 KB
Format:
Adobe Portable Document Format
Description:
Abstract
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Chemistry Department