Brazilian Journal of Biological Sciences (ISSN 2358-2731)

Home Archive v. 5, no. 11 (2018) Echi


Vol. 5, No. 11, p. 781-797 - Dec. 31, 2018


Physico-chemical properties and heavy metal contents of a tropical estuarine ecosystem, Nigeria

Paul Chinedu Echi , Daberechi Ndudim Okpechi , Janet Azu Urum and Izuchukwu Samson Arukwe

Ibaka Estuarine in Mbo, Nigeria, has little or no information on its basic properties, therefore its water samples were studied from March to June 2018 in three different stations and compared with International Standards to evaluate its physic-chemical properties as well as heavy metal contents. The physic-chemical properties studied include pH, salinity (g/L), EC (μs/cm), turbidity (NTU), total suspended solids (mg/L), total dissolved solids (mg/L), dissolved oxygen (mg/L), BOD5 (mg/L), and chemical oxygen demand (mg/L). In addition, some metal concentrations of manganese, iron, copper, lead, zinc, cadmium, chloride and magnesium were determined by atomic absorption spectroscopy (AAS). The range of metal concentrations manganese (0.08-0.12 mg/L), copper (0.05-0.09 mg/L), lead (0.01-0.03 mg/L), iron (1.86-4.66 mg/L), zinc (0.68-1.16 mg/L), cadmium (0.04-0.08 mg/L), chloride (675.0-791.25 mg/L), magnesium (10.66-14.30 mg/L). The study infers that anthropogenic pressure plays damaging role to its properties in addition to general health implication of high values for Fe, Zn, Cd, Cl and Mg which exceeded international standard.

Ibaka Estuarine; Aquatic ecosystem; Heavy metals; Physic-chemical parameters.


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