Bioaccumulation pattern of heavy metals in fish tissues and associated health hazards in human population

The study was conducted on heavy metals contents of water, fish tissues and sediment from Lagos lagoon complex, Nigeria. The aim was to assess the current environmental health/pollution status of the lagoon from three sample stations: Ologe lagoon [1], Badagry creek [2] and Lagos island [3]; each having three (3) hotspots. In all, twelve (11) heavy metals were determined between June and November, 2018. Heavy metals: Zn, Fe, Pb, Cu, Na, Potassium, Ca, Mn, Cd, Hg and Nickel were determined using Atomic absorption spectrophotometer (AAS). Results of mean Heavy metals in fish tissues were: Zn (0.741±0.38), Fe (5.59±8.32), Pb (0.12±0.17mg/l), Cu (0.16±0.25), Na (9.38±0.25), Ca (116.68±41.53), Mn (0.76±0.96), Pb (0.01±0.0), Cd (0.02±0.0), Potassium (12.09±2.34), Ni (0.02±0.02) and Hg (0.01±0.0). Statistical analysis showed variations in the distribution of Heavy metals which are mostly within recommended limits of WHO, FME, & LASEPA. Except for iron (Fe), which was found in excess in fish tissues, and other metals (lead), found in higher conc. in sediments than in water and fish tissues combined. This is indicative of heavy metals bio-accumulation in the study area.

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Assessment of heavy metals in water, sediment and fish tissues, from ,Sharkia province, Egypt

Egyptian Journal of Aquatic Biology and Fisheries ◽

10.21608/ejabf.2011.2097 ◽

2011 ◽

Vol 15 (2) ◽

pp. 125-144 ◽

Cited By ~ 6

Author(s):

El-Sayed El-Sayed ◽

Zeinab Khater ◽

Mohamed El-Ayyat ◽

El-Sayed Nasr

Keyword(s):

Heavy Metals ◽

Fish Tissues

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Assessment of environmental and radiological health hazards due to heavy metals and radionuclides contents in utility water reservoirs' sediments

International Journal of Environment and Health ◽

10.1504/ijenvh.2017.086182 ◽

2017 ◽

Vol 8 (3) ◽

pp. 235

Author(s):

Omoniyi Matthew Isinkaye ◽

James Ibitoye Agbi ◽

Yinka Ajiboye ◽

Romanus Ayoola Obasi

Keyword(s):

Heavy Metals ◽

Health Hazards ◽

Water Reservoirs ◽

Radiological Health

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Appraisal of heavy metal contents in groundwater and associated health hazards posed to human population of Ropar wetland, Punjab, India and its environs

Chemosphere ◽

10.1016/j.chemosphere.2019.04.009 ◽

2019 ◽

Vol 227 ◽

pp. 179-190 ◽

Cited By ~ 22

Author(s):

Sakshi Sharma ◽

Avinash Kaur Nagpal ◽

Inderpreet Kaur

Keyword(s):

Heavy Metal ◽

Human Population ◽

Health Hazards ◽

Metal Contents ◽

Ropar Wetland

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Assessment of heavy metals bioconcentration factor (BCF) and genotoxicity response induced by metal mixture in Salmo salar tissues

Proccedings of 10th International Conference "Environmental Engineering" ◽

10.3846/enviro.2017.043 ◽

2017 ◽

Author(s):

Gintarė Sauliutė ◽

Milda Stankevičiūtė ◽

Gintaras Svecevičius ◽

Janina Baršienė ◽

Roberta Valskienė

Keyword(s):

Heavy Metals ◽

Atlantic Salmon ◽

Salmo Salar ◽

Peripheral Blood ◽

Bioconcentration Factor ◽

Micronucleus Test ◽

Significant Elevation ◽

Fish Tissues ◽

Metal Mixture ◽

Nuclear Abnormalities

The aim of this study was to evaluate metals bioconcentration factor (BCF) in gills, liver, kidneys and muscle in relation with genotoxicity effects of metal mixture in peripheral blood, kidneys, gills and liver erythrocytes of the Atlantic salmon (Salmo salar). Fish were exposed to maximum-permissible waterborne concentrations of Zn – 0.1, Cu – 0.01, Ni – 0.01, Cr – 0.01, Pb – 0.005 and Cd – 0.005 mg/L, respectively for 7 and 14 days. Genotoxicity was studied using the micronucleus test. In addition, erythrocyte nuclear abnormalities (ENAs) were analysed. Our study indicates that metal BCF in Atlantic salmon is tissue-dependent. Based on the BCF classification scale, the relatively low values of metals bioconcentration were assessed, except for Zn (gills) and Cu (liver) (359.6 and 594.0, respectively). Zn intensively concentrated in fish tissues, while Pb – least of all. Overall, metals were concentrated mostly in the liver, least – in the muscle. Significant differences among BCF values of Pb in gills and muscle and Cd in gills were measured between 7 and 14 d exposure groups. Treatment with metal mixture significantly increased micronucleus frequencies after 7 d of exposure in liver and peripheral blood erythrocytes. Significant genotoxicity response was not observed after 14 d treatment. The erythrocytic nuclei abnormalities determined in S. salar blood were nuclear bud on filament (NBf), nuclear bud (NB), blebbed (BL), kidney shaped, vacuolated (VacNuc), 8-shaped nuclei and fragmented-apoptotic (FA) erythrocytes. Significant elevation in total ENAs level was detected in kidneys and liver erythrocytes after 7 d treatment, while after 14 d – in gills and kidneys erythrocytes. No significant differences among analysed responses were measured between 7 and 14 d exposure groups, except total ENAs level in liver erythrocytes.

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