Organochlorine pesticide residues in fish from Lake Naivasha and Tana River, Kenya

Mugachia, J.C.; Kanja, Laetitia Wakonyu; Gitau, FK

doi:10.1007/bf00191756

Cited by 9 publications

(2 citation statements)

References 3 publications

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“…2007). DDT and other organochlorine pesticides have been shown to affect reproduction of various test animals (Hayes 1982; Mugachia et al. 1992; Gonzalez et al.…”

Section: Introductionmentioning

confidence: 99%

Risk assessment for organochlorines and organophosphates pesticide residues in water and Sediments from lower Nyando/Sondu‐Miriu river within Lake Victoria Basin, Kenya

et al. 2011

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The objective of this study was to survey and document pesticide residue levels in the lower Nyando ⁄ Sondu-Miriu catchment areas of Lake Victoria, Kenya, during the dry and rainy seasons of 2009. Water and sediment samples from the Nyando ⁄ Sondu-Miriu Basin were analysed for selected pesticide residues, using gas chromatography equipped with Ni 63 and CP-SIL 8CB-15m and TSD detectors for organochlorine and organophosphorus pesticide residues, respectively. The findings indicated that banned organochlorines are still being used in the catchment. Dieldrin and p,p¢-DDD were notably higher (P < 0.05) in concentrations than their metabolically formed analogues of aldrin and DDT, respectively. Notably, organophosphorus was below detection levels in water samples, whereas diazinon and malathion were at higher levels in sediment samples. The total residues of DDT, HCH, methoxychlor and endrin generally were below WHO drinking water limits of 2, 2, 20 and 0.01 lg L )1 , respectively, whereas aldrin and dieldrin were above the recommended values of 0.03 lg L )1 . Agricultural activities in the Lake Victoria Basin are influencing accumulation of the pesticide residues in the basin rivers and the lake. The study recommends creation of buffer zones around the natural water bodies to reduce the inflow of pesticides into water bodies. An integrated pest management approach that encourages reduced usage of chemical compounds also should be encouraged.

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“…2007). DDT and other organochlorine pesticides have been shown to affect reproduction of various test animals (Hayes 1982; Mugachia et al. 1992; Gonzalez et al.…”

Section: Introductionmentioning

confidence: 99%

Risk assessment for organochlorines and organophosphates pesticide residues in water and Sediments from lower Nyando/Sondu‐Miriu river within Lake Victoria Basin, Kenya

et al. 2011

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“…Fish tissues and sediment samples were oven dried at 70 o C for 72 hours and thereafter ground to powder using a blender to obtain a homogenous sample. Pesticide residues in sediments and fish samples were extracted using Soxhlet extractor apparatus [15]. Exactly 10 g of the homogenized sample was placed in a beaker containing 50 g anhydrous sodium sulfate and mixed thoroughly.…”

Section: Extraction Of Pesticides In Fish and Sediment Samplesmentioning

confidence: 99%

Organic Pesticides Concentration in Water, Sediments and Fish Tissues obtained from Ogbakiri River in the Niger-Delta Region, Nigeria and Its Health Implication on Human Consumption

Okonkwo¹,

Archibong²,

Okereke³

et al. 2017

ijbb

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Organic pesticides concentrations in tissues of Chrysichthys nigrodigitatus (catfish) and Liza falcipinis (mullet) sampled from Ogbakiri River, Niger Delta, Nigeria were investigated to find out the extent of pesticide contamination in the river and its possible health implication on human consumption assessed. Pesticides were analyzed using gas chromatography coupled with electron capture detector (GC-ECD). The concentration of pesticides ranged from 0.0010±0.0001 to 0.0095±0.0002 µg/l and 0.0007±0.0001 to 0.0110±0.0002µg/g in water and sediments, respectively. Similarly, pesticides concentration in fish tissues ranged from 0.0002±0.0001 to 0.0185±0.0002µg/g and 0.0003±0.0001 to 0.0098±0.0002µg/g in liver and muscle respectively. Moreso, to assess health risk concerns, the measure concentrations of pesticide residues were compared with regulatory benchmarks. Risk hazard estimates of dichlorodiphenyltrichloroethanes, Chlordanes, hexachlorobenzene in the studied fishes showed no potential adverse effect to human consumption at the observed concentrations. The cancer risk was also evaluated according to the guideline as stipulated by USEPA and was within acceptable risk range of 10-4. Thus exposed populations are not at cancer risk through consumption of fish from this river.

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Organochlorine pesticides in swine tissues from abattoir material collected in Nairobi, Kenya

Kotonya

Mutungi

Kanja

1994

Bull. Environ. Contam. Toxicol.

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Organochlorine pesticide residues in fish from Lake Naivasha and Tana River, Kenya

Cited by 9 publications

References 3 publications

Risk assessment for organochlorines and organophosphates pesticide residues in water and Sediments from lower Nyando/Sondu‐Miriu river within Lake Victoria Basin, Kenya

Risk assessment for organochlorines and organophosphates pesticide residues in water and Sediments from lower Nyando/Sondu‐Miriu river within Lake Victoria Basin, Kenya

Organic Pesticides Concentration in Water, Sediments and Fish Tissues obtained from Ogbakiri River in the Niger-Delta Region, Nigeria and Its Health Implication on Human Consumption

Organochlorine pesticides in swine tissues from abattoir material collected in Nairobi, Kenya

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