Journal of Ecology plus the Natural Environment Vol. 3(12), pp. 392-399, 21 October, 2011 Available online in http://www.academicjournals.org/JENE ISSN 2006 -- 9847В©2011 Educational Journals
Full Length Research Paper
Organochlorine and organophosphorus pesticide elements in water and crud from Yala/Nzoia River within just Lake Exito Basin, Kenya Safina Musa1*, John Wageni Gichuki2, Phillip Okoth Raburu3 and Captain christopher Mulanda Aura4, 5 Kegati Aquaculture Research Station, Kenya Marine and Fisheries Analysis Institute, G. O. Package 3259-40200, Kisii, Kenya. 2 Kenya Marine and The fishing industry Research Company, P. U. Box 1881-40100, Kisumu, Kenya. 3 Chepkoilel University School, Moi University, P. U. Box 1125-30100, Eldoret, Kenya. 4 Kenya Marine and Fisheries Exploration Institute, L. O. Package 81651-80100, Mombasa, Kenya. a few Laboratory of Marine Bioresource and Environment Sensing, Hokkaido University, Minato-cho, Hakodate, Hokkaido 041-8611, The japanese. Accepted 29 September, 2011
This study set out to survey pesticide usage and concentrations of their residues in lower Yala/Nzoia catchment parts of Lake Victoria, Kenya during the dry and rainy months of 2009. Water and sediment samples were assessed for picked organochlorine and organophosphorus pesticide residues applying gas chromatography equipped with electron capture metal detector. The results of the review showed which the banned organochlorines are still getting used in the catchment. Pesticide remains levels of organochlorines in drinking water samples from Yala/Nzoia Pot were beneath detection limit (BDL) equally during the wet and dried out seasons. The residue amounts detected in sediment samples collected during the rainy time ranged from zero. 05 to 59. 01 Вµgkg-1, whereas during the dry out season, they will ranged from BDL-24. 54 Вµgkg-1. The concentrations of dieldrin and s, p'-DDD were notably larger (p < 0. 05) than aldrin and l, p'DDT, respectively, in most from the samples. Simply no organophosphates had been detected in a of the normal water and crud samples. Organochlorine residues recognized in sediment in equally seasons had been below the Universe Health Business recommended suggestions. Therefore , it absolutely was concluded that there were neither environmental nor individual health hazards carried by these compounds in the normal water and sediments. Key words: Organochlorine, organophosphorus, residues, Lake Exito.
INTRODUCTION The usage of pesticides has certainly increased agricultural development, and increased longevity and quality of life. Coupled with these success are a number of side effects. Pesticide use is even now indispensable in Kenya in regards to agricultural development and public health vector control. However , the toxicity of those compounds and their presence in the environment create grave problems that obliges the introduction of methods that could increase farming productivity and disease vector control with minimal environmental contamination and side effects to non-target varieties. Previous research conducted on sediments, micro-invertebrate organisms from both ocean and fresh water ecosystems in Kenya have continually unveiled contamination by pesticides (Barasa, 1998; Everaarts et al., 1997; Getenga et approach., 2004; Mugachia et 's., 1992; Munga, 1985; Wandiga et approach., 2002). Numbers of pesticide toxic contamination at the top of the food chain inside the basin have been completely exhibited by presence of residues inside the cow and human dairy, and chicken eggs (Kahunyo et al., 1986; Kanja, 1988; Kituyi et ing., 1997; Wandiga and Mutere, 1988). Potential risks of pesticide use in the tropical forests may differ by those in the widely studied temperate areas. It is
*Corresponding author. E-mail: [email protected] com. Tel: +254735824779, +254717628566.
Musa et ing.
generally assumed that the climatic conditions in the tropics aid the malfunction of bioactive compounds, hence avoiding a lot of the side effects of pesticides. Kenya, like most other developing countries, is at the crossroads of environmentally environmentally friendly agricultural...
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