Seasonal variation of temperature dependent physico-chemical parameters of a coastal River Bhadra, Bangladesh

This analysis observed the seasonal variation in the temperature dependent physico-chemical parameters [pH, Transparency, Salinity, Electrical conductivity (EC), Total Dissolved Solid (TDS), Total Alkalinity, Total Acidity, Dissolved Oxygen (DO) and Free Dissolved CO2] of surface water in a coastal river in Bangladesh. Composite samples from four different sampling points that considered high and low tides were collected and analyzed in three main consecutive seasons: rainy, winter and summer. The study has revealed that most physico-chemical parameters are not a serious problem for Bhadra River eco-system and water quality shows significant seasonal changes. The statistical analysis unveiled a positive correlation of temperature with pH, Transparency, Salinity, EC, TDS, Total Alkalinity, Total Acidity and Free Dissolved CO2 but only negative correlation with DO.