Oxygen Deficit Formula:
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Definition: Oxygen Deficit is the difference between the saturated dissolved oxygen concentration and the actual dissolved oxygen concentration in water.
Purpose: It helps in assessing water quality and the degree of oxygen depletion in aquatic environments.
The calculator uses the formula:
Where:
Explanation: The difference between the maximum possible oxygen concentration and the actual oxygen concentration in water gives the oxygen deficit.
Details: Measuring oxygen deficit is crucial for understanding water quality, aquatic ecosystem health, and the impact of pollution.
Tips: Enter the saturated dissolved oxygen and actual dissolved oxygen values in kg/m³. Both values must be ≥ 0.
Q1: What causes oxygen deficit in water?
A: Oxygen deficit occurs due to biological oxygen demand from decomposition of organic matter, respiration of aquatic organisms, and other oxygen-consuming processes.
Q2: What is a normal range for oxygen deficit?
A: In healthy water bodies, the deficit is typically small (0.001-0.003 kg/m³). Larger deficits indicate pollution or eutrophication.
Q3: How do I measure SDO and ADO?
A: SDO can be determined from temperature/salinity tables, while ADO is measured using dissolved oxygen meters or chemical tests.
Q4: Can oxygen deficit be negative?
A: No, since SDO represents the maximum possible oxygen concentration, the deficit cannot be negative in natural conditions.
Q5: What factors affect oxygen deficit?
A: Temperature, salinity, atmospheric pressure, biological activity, and pollution levels all influence oxygen deficit.