Journal of
Environmental Chemistry and Ecotoxicology

  • Abbreviation: J. Environ. Chem. Ecotoxicol.
  • Language: English
  • ISSN: 2141-226X
  • DOI: 10.5897/JECE
  • Start Year: 2009
  • Published Articles: 175

Article in Press

Comparative study of heavy metal concentration of Rivers Niger, Benue and the confluence points for sustainable fish production in Lokoja, Kogi State

Department of Water Resources, Aquaculture and Fisheries, Federal University of Technology, Minna, Niger State, P.M.B. 065.

  •  Received: 30 August 2018
  •  Accepted: 16 October 2018
The different levels of some heavy metals content of Rivers Niger, Benue and their confluence points were determined and compared for one calendar year from April 2016 to March 2017. Five sampling stations were located along River Niger, River Benue, Confluence point and their post Confluence Points. Two water samples were collected from each of the station once monthly and analyzed. The result of the analyzed data showed variations in the monthly mean values for all the heavy metals content of these water bodies(stations) with observed significant differences (p<0.05). There were variations in the heavy metals concentration with significant difference among the months for sodium, potassium, magnesium, manganese, iron, zinc and calcium while other heavy metals (Copper, chromium and lead) recorded very low concentrations with slight significant difference in all the months observed. River Niger, River Benue, Confluence point and their post confluence points also showed variations in all their heavy metals concentrations but without significant difference except for copper, zinc, manganese and chromium. However, iron recorded high concentration value of 5.2 mg/L which is above the maximum permitted level of 0.3mg/L as regulated by Nigeria Standard for Drinking Water Quality. The highest levels of sodium, copper, chromium and zinc pose no threat to sustainable aquatic life production and for human use. Proper and adequate process should be used for treating and processing these waters for fish production and domestic activities because of the high iron and lead concentration in them while supplementary sources of manganese, zinc, calcium, sodium and potassium is recommended if the water bodies is to be used for fish culturing and breeding. Regular public enlightenment campaigns against all forms of water pollution especially through farm chemicals and domestic pollutions should be carried out and relevant laws concerning waste disposal and sanitation be enforced.

Keywords: Rasheed Ojutiku