Greener Journal of Biological Sciences, Vol. 6 (2), pp. 034-041, February 2016.
ISSN: 2276-7762 © 2011- 2016 Greener Journals
Manuscript Number: 020216030
Evaluation of Physicochemical Parameters of Selected Rivers in Ebonyi State, Southeast, Nigeria
Ani, C.1, Okogwu, O.I.1, Nwonumara, G.N.1, Nwani, C.D.2 and Nwinyimagu, A.J.3
1 Department of Applied Biology Ebonyi State University, Abakaliki
2 Department of Zoology University of Nigeria Nsukka
3 Forestry Department Ministry of Agriculture and Natural Resources, Ebonyi State
The water qualities of three rivers (Asu, Ebonyi and Cross) were evaluated for these physicochemical parameters: transparency, flow rate, depth, temperature, conductivity, total dissolved solid (TDS), pH, dissolved oxygen (DO), phosphate (PO4-) and nitrate (NO3-) for 12 months (August 2014 – July 2015). The results showed variations in the water quality parameters among the rivers. Temperature, conductivity and TDS were highest in Asu River with mean values of 30.23 0C, 88 µS/cm and 42.58 mg/L, respectively. The mean values of pH varied from 7.0 to 6.56 with the highest value (7.0) recorded in Ebonyi River and the lowest value (6.56) recorded in Mid-cross River. The mean value of DO was highest (5.8 m/Ll) in Mid-cross River and lowest (4.9 mg/L) in Asu River. The lowest mean values of transparency, flow rate and depth were recorded in Asu River, the highest (0.5 m) mean value of transparency was recorded in Mid-cross River while the highest mean value (1.48 m) of Flow rate was recorded in Ebonyi River. Variations in the mean value of nutrient in the water showed that PO4- (0.28 mg/L) and N03- (0.40 mg/L) were the highest in Asu River. The lowest PO4- was recorded in Ebonyi River (0.17 mg/L) while the lowest NO3- value was recorded in the Mid-Cross River. Variations in Temperature, DO, Flow rate and PO4- were not significantly different (P > 0.05) while conductivity, TDS and transparency were significantly different (P < 0.05). The results of most water parameters recorded are within the recommended limits of set standards for rivers.
Keywords: Water Quality, Physicochemistry, Aquaculture, Three Rivers, Acceptable Limit.
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