Comparative Study of Physico-chemical Parameters to Understand Water Quality of the Two Freshwater Rivers - Me and Agneby - Cote d'Ivoire

Abstract

The present study aims to compare physico-chemical parameters of Agneby and Me rivers of Cote d'Ivoire. A total of eight (8) physico-chemical parameters were determined in nine (9) localities surveyed on both the Agneby and Me Rivers. Sampling were carried out on a seasonal frequency between August 2015 and July 2016. Principal Component Analysis (PCA) of both rivers showed that Agneby River localities were characterized by warm water (27.08 ± 0.87°C), neutral pH (7.07 ± 0.26), high salinity (0.05 ± 0.04 ‰), relatively high levels of dissolved substances (58.01 ± 32.19 mg/L), and low resistivity (26.97 ± 22.46 kΩ/cm) compared to Me River localities. Bravais Pearson correlation matrix between physico-chemical parameters of both rivers showed a strongly significant positive correlation between salinity and conductivity (0.89), salinity (0.90) and TDS, conductivity (0.91) and total dissolved solids, and a negative highly correlation was observed respectively between pH and redox potential (-0.75), pH and resistivity (-0.73), resistivity and total dissolved solids (-0.64), resistivity and conductivity (-0.57) and between resistivity and salinity (-0.57).