dc.contributor.author |
Otieno, Peter O |
|
dc.contributor.author |
Schramm, Karl-Werner |
|
dc.contributor.author |
Pfister, Gerd |
|
dc.contributor.author |
Lalah, Joseph O |
|
dc.contributor.author |
Ojwach, Stephen O |
|
dc.contributor.author |
Virani, Munir |
|
dc.date.accessioned |
2015-06-03T07:21:12Z |
|
dc.date.available |
2015-06-03T07:21:12Z |
|
dc.date.issued |
2012 |
|
dc.identifier.citation |
Bulletin of Environmental Contamination and Toxicology April 2012, Volume 88, Issue 4, pp 526-532 |
en_US |
dc.identifier.uri |
http://link.springer.com/article/10.1007/s00128-012-0529-7 |
|
dc.identifier.uri |
http://hdl.handle.net/123456789/1268 |
|
dc.description.abstract |
Chlorpyrifos ethyl was found to be widely distributed in water and sediment in Lake Naivasha. Higher levels were reported in sediment (11.2–30.0 ng g−1 dry weight (dw) in wet season than in dry season (4.7–17.4 ng g−1 dw). The mean concentration of chlorpyrifos ethyl in water in wet season ranged between 8.8 and 26.6 μg L−1 and decreased to between below detection limit to 14.0 μg L−1 in dry season. On average, higher concentrations of chlorpyrifos ethyl were observed in sediment than water samples. Statistical analysis revealed a significant difference in concentration between the seasons, and a significant interaction between seasons and mean concentrations at p ≤ 0.05. However, levels of diazinon and carbofuran were below the detection limit in all the samples analyzed. Notably, levels of chlorpyrifos ethyl were higher than the maximum allowable limits (0.1 μg L−1) recommended by European Union for drinking water and general water quality criterion for protection of freshwater water organisms (0.083 μg L−1). |
en_US |
dc.language.iso |
en |
en_US |
dc.title |
Spatial Distribution and Temporal Trend in Concentration of Carbofuran, Diazinon and Chlorpyrifos Ethyl Residues in Sediment and Water in Lake Naivasha, Kenya |
en_US |
dc.type |
Article |
en_US |