dc.contributor.author | P.O. Otieno, P.O. Owuor, J.O. Lalah, K.W. Schramm, G. Pfizer | |
dc.date.accessioned | 2020-07-28T12:10:45Z | |
dc.date.available | 2020-07-28T12:10:45Z | |
dc.date.issued | 2012 | |
dc.identifier.uri | https://repository.maseno.ac.ke/handle/123456789/1635 | |
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 lg L-1 and
decreased to between below detection limit to 14.0 lg 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 B 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 lg L-1
) recommended by European Union for
drinking water and general water quality criterion for protection of freshwater water organisms (0.083 lg L-1
). | en_US |
dc.publisher | Springer | en_US |
dc.subject | Lake Naivasha Pesticides Horticultural farming Water Sediment | 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 |