二氧化氮 Detection
Formula NO₂ · CAS 10102-44-0 · 强刺激性 / 大气污染物
Hazards & Toxic Symptoms
Nitrogen dioxide is a reddish-brown irritating gas that dissolves in water to produce nitric acid. It penetrates deep into the pulmonary alveoli, causing pulmonary edema, with an incubation period of 4-48 hours. Long-term exposure to low doses accelerates the decline in lung function.
Occupational Exposure Limits (GBZ 2.1-2019)
| PC-TWA (Time-Weighted Average) | 5 mg/m³ |
|---|---|
| PC-STEL (Short-Term Exposure) | 10 mg/m³ |
| IDLH (Immediately Dangerous to Life or Health) | 20 ppm |
⚠️ Actual alarm thresholds depend on on-site risk assessment. ⚙️ Use the GB Alarm Calculator →
Typical Application Scenarios
- Nitric acid production
- Flue gas from coal-fired boilers
- Automotive exhaust
- Electroplating / Acid pickling
- Welding workshop
Detection Principle / Recommended Sensors
Electrochemical (preferred) / Chemiluminescence
Common Range：0-20 ppm
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Matching product categories: 二氧化氮 detector 二氧化氮 analyzer