Contamination of Surface Waters by Obsolete Pesticides Emanating from a Point Source in Coast Region, Tanzania
| dc.contributor.author | Mahugija, John A.M. | |
| dc.contributor.author | Kishimba, Michael A. | |
| dc.date.accessioned | 2018-09-05T12:07:33Z | |
| dc.date.available | 2018-09-05T12:07:33Z | |
| dc.date.issued | 2007 | |
| dc.description.abstract | This paper reports on the concentrations of organochlorine pesticide residues in water samples collected from 1 – 25 km away from a highly obsolete pesticides contaminated site at Vikuge farm in Coast region -Tanzania. GPC-cleaned extracts analyzed by GC-ECD and confirmed by GC-MS showed the presence of twelve compounds namely p,p’-DDT, o,p’-DDT, p,p’-DDE, o,p’-DDE, p,p’-DDD, o,p’-DDD, pentachloroanisole, a-HCH, b-HCH, g-HCH, aldrin and dieldrin. The concentrations of total DDT ranged from 819 – 1764 ng/l in pond water, below detection limit (bdl) – 1076 ng/l in river water, and bdl – 572 ng/l in drinking water. The concentrations of total HCHs were up to 23 ng/l in pond water, 1167 ng/l in river water, and 12 ng/l in drinking water. The highest concentrations for other compounds were 29.2 +/- 0.1 ng/l for pentachloroanisole, 8+/- 0.7 ng/l for aldrin and 6+/- 0.6 ng/l for dieldrin. There are strong positive correlations in the concentrations of most of the detected compounds suggesting a common source. Some concentrations were higher than the respective maximum residue limits and guidelines for aquatic ecosystems indicating potential risks and concerns for public health and the environment at large. | en_US |
| dc.description.sponsorship | The German Academic Exchange Service (DAAD) | en_US |
| dc.identifier.citation | Marco, J.A. M. and Kishimba,M.A., 2007. Contamination of surface waters by obsolete pesticides emanating from a point source in Coast Region, Tanzania. International Journal of BioChemiPhysics 16, Nos1 & 2, pp 17–26. | en_US |
| dc.identifier.issn | 1019-7648 | |
| dc.identifier.uri | http://hdl.handle.net/20.500.11810/4776 | |
| dc.language.iso | en | en_US |
| dc.publisher | University of Nairobi | en_US |
| dc.subject | Research Subject Categories::NATURAL SCIENCES | en_US |
| dc.title | Contamination of Surface Waters by Obsolete Pesticides Emanating from a Point Source in Coast Region, Tanzania | en_US |
| dc.type | Journal Article | en_US |