Description

Dissolved oxygen (DO) analysis measures the amount of oxygen dissolved in water. *Importance:* 1. *Aquatic life*: Essential for fish and other aquatic organisms. 2. *Water quality*: Indicates overall health of water bodies. 3. *Wastewater treatment*: Monitors treatment process effectiveness. *Methods:* 1. *Titration*: Chemical analysis. 2. *Electrochemical sensors*: Measure oxygen levels directly. 3. *Optical sensors*: Use luminescence or fluorescence. *Factors affecting DO levels:* 1. *Temperature*: Decreases with increasing temperature. 2. *Salinity*: Decreases with increasing salinity. 3. *Organic pollution*: Can deplete DO levels. DO analysis helps assess water quality, supporting aquatic life and ecosystem health.