SO2 (SO₂)
Sulfur Dioxide
Pungent, highly reactive acidic gas originating from sulfur-bearing fossil fuel combustion.
What is SO2 (Sulfur Dioxide)?
Sulfur Dioxide (SO₂) is a pungent, colorless toxic gas produced by burning sulfur-rich heavy fuel oils and coal. It forms atmospheric sulfuric acid aerosols and causes acute bronchoconstriction even at low concentrations.
- •Industrial workshop heating with unrefined fuel oils
- •Coal-fired power generation, smelting, and maritime fuel burning
Health Effects of SO2
- •Severe coughing, wheezing, and throat burning within minutes
- •Chronic bronchitis and permanent reduction in respiratory capacity
Concentration Levels & Safety Guidelines
Standardized thresholds to identify when active ventilation and air filtration intervention is required.
Background levels with zero respiratory risk.
Immediate industrial airway hazard; requires active chemical scrubbing.
| Organization | Guideline Limit | Exposure Timeframe |
|---|---|---|
| World Health Organization (WHO) | 40 µg/m³ | 24-Hour Target |
How DLE Measures SO2
Catalytic oxidation of SO₂ generates current across electrolyte electrodes with thermal compensation.
Ruggedized environmental monitors for perimeter and stack emissions tracking.
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