Assessment of Polycyclic Aromatic Hydrocarbons in Lates niloticus, Oreochromis niloticus and Rastrineobola argentea as Sources of Human Exposure in Kisumu Bay, Winam Gulf of Lake Victoria

Onyango, Alice A.; Lalah, Joseph O.; Wandiga, Shem O.; Gichuki, John

doi:10.1007/s00128-012-0567-1

Cited by 10 publications

(3 citation statements)

References 5 publications

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“…For instance, the levels of PAH on a wet weight basis were found to range from 19.7 ng·g −1 to 154.3 ng·g −1 in Bolti fish and mallet fish collected from markets in Ismailia city, Egypt [12]. The contents of ∑ PAHs in fish from Lake Victory in Africa were between of 0.035 ng·g −1 and 3.934 ng·g −1 [24]. And ∑ PAHs contents in Mullus barbatus from the Sicily Channel in Italy had a mean of 26.47 ng·g −1 ± 34.16 ng·g −1 [25].…”

Section: Resultsmentioning

confidence: 99%

Levels, Distribution, and Health Risks of Polycyclic Aromatic Hydrocarbons in Four Freshwater Edible Fish Species from the Beijing Market

Qin

et al. 2012

The Scientific World Journal

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We first estimated the content of polycyclic aromatic hydrocarbons (PAHs) in the brain, liver, bladder, roe, and muscle of four species of edible freshwater fish from the Beijing market. The distribution characteristics of PAHs in these tissues and organs were analyzed to determine their health risks to humans. The results showed that the residual levels of wet weight and lipid-normalized weight ∑PAHs in various tissues of these fish ranged from 0.51 ng·g−1 to 28.78 ng·g−1 and from 93.62 ng·g−1 to 8203.43 ng·g−1, respectively. The wet weight contents of ∑PAHs were relatively higher in the brain and lower in the liver and muscle. But the differences were not significant. And the differences of lipid-normalized weight PAHs were significant, which in the bighead carp were found significantly the highest, followed in crucian carp, and the lowest in grass carp and carp. The contents of ∑PAHs were the highest in the liver and the lowest in the brain. In the tissues with a higher lipid content, higher residual levels of PAHs were found. The carcinogenic risks for humans from residual ∑PAHs in the various fish tissues were far below 10−5.

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Section: Resultsmentioning

confidence: 99%

Levels, Distribution, and Health Risks of Polycyclic Aromatic Hydrocarbons in Four Freshwater Edible Fish Species from the Beijing Market

Qin

et al. 2012

The Scientific World Journal

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“…Recent research has shown that Lake Victoria is contaminated with pesticide residues, metals and polycyclic aromatic hydrocarbons (PAHs), especially the Winam Gulf part, where concentrations sometimes exceed the guideline limits for drinking water and aquatic life (Kwach and Lalah, 2009;Ongeri et al, 2009;Wasswa et al, 2011;Onyango et al, 2012). Some contaminants have also been detected in edible parts of the three most common fish species Nile perch (Lates niloticus), tilapia (Oreochromis niloticus) and Darga (Rastrineobola argentea).…”

Section: Introductionmentioning

confidence: 97%

Dioxin-like PCBs and PCDD/Fs in surface sediments near the shore of Winam Gulf, Lake Victoria

Omwoma

Lalah

Virani³

et al. 2015

Chemosphere

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“…This is attributed to increased nutrient loading from both atmospheric deposition and surface run-off both being factors of rising human population and their associated anthropogenic activities resulting in growing changes in the lake's phytoplankton community [8]. The pollution impact by municipal and industrial discharge is visible in some of the rivers discharging into the largest East African lake as well as the shoreline mainly along shallow areas of Kenya's Winam Gulf in Kisumu, Tanzania's Mwanzaarea and Uganda's Inner Murchison Bay as well as Jinja catchment [9] [10] [11] [12]. A number of factors have been listed to affect the quality of Lake Victoria waters among them being rapid population growth, increased agriculture, urbanization, industrial activities, poverty in rural and peri-urban areas, and uncontrolled dumping of waste among others despite existing environmental policies [13] [14].…”

Section: Introductionmentioning

confidence: 99%

Water Quality of Selected Fishing Beaches of Lake Victoria Kenyan Gulf

Orina¹,

Onyango²,

Lung’ayia³

et al. 2020

OJE

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Lake Victoria the second largest fresh water body in the world located in East Africa is a shared resource between Kenya, Tanzania and Uganda and enjoys a wide range of streams and rivers from as far as Burundi and Rwanda. The lake has environmentally undergone physical, chemical and biological changes in the last four decades, particularly rise in its trophic condition and decline in oxygen level, which affects the water quality and fish population dynamics. This study therefore set out to determine the quality of water in selected fishing beaches of Lake Victoria, Kenya with a view to report the possible pollution levels. pH was highest at Nyamasari and Kotieno (9.3 ± 0.1) and lowest at Nyachebe and Kichinjio (7.08 ± 0.1) whereas temperature was highest at Nyamasari (29.5˚C ± 0.0˚C) and lowest at Kichinjio (23.4˚C ± 0.2˚C). DO was highest at Kotieno (10.3 ± 0.2 mgL) and lowest at Seka (2.4 ± 0.1 mgL). Turbidity was highest at Uyoga (125.5 ± 0.90 NTU) and lowest at Osieko (2.7 ± 0.1 NTU). Ammoniacal nitrogen was highest at Dunga (1278.3 ± 0.8 μg•l −1) and lowest at Nyamasari (12.4 ± 0.8), all a factor of human activities, lake substratum and effluents from rivers and surface runoff. All parameters assessed showed significant differences across sampling sites and depth except pH which did not vary significantly with distance from lakeshore. Further, all parameters did not show a clear pattern with respect to distance from the lakeshore possibly due to adequate mixing in the gulf. There is a need for further water quality monitoring by seasons to inform policy decisions towards sustainable lake exploitation.

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Assessment of Polycyclic Aromatic Hydrocarbons in Lates niloticus, Oreochromis niloticus and Rastrineobola argentea as Sources of Human Exposure in Kisumu Bay, Winam Gulf of Lake Victoria

Cited by 10 publications

References 5 publications

Levels, Distribution, and Health Risks of Polycyclic Aromatic Hydrocarbons in Four Freshwater Edible Fish Species from the Beijing Market

Levels, Distribution, and Health Risks of Polycyclic Aromatic Hydrocarbons in Four Freshwater Edible Fish Species from the Beijing Market

Dioxin-like PCBs and PCDD/Fs in surface sediments near the shore of Winam Gulf, Lake Victoria

Water Quality of Selected Fishing Beaches of Lake Victoria Kenyan Gulf

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