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nitrogen dioxide

Learn all about nitrogen dioxide and find the right gas detection system for nitrogen dioxide monitoring.

Nitrogen dioxide and its properties

Nitrogen dioxide (NO₂) is a brown, toxic gas produced mainly by the combustion of fossil fuels, such as in vehicles and industrial plants. It is a factor in air pollution and can cause respiratory diseases. High NO₂ levels can damage the lungs and cause acid rain.

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limit values

Information on nitrogen dioxide limit values

SUVA limit values

MAK value: 1.5 ppm (3 mg/m³)
KZG value: 3 ppm (6 mg/m3)

EU workplace exposure limits (BOELV)

MAK value: 1.5 ppm (3 mg/m³)
KZG value: 3 ppm (6 mg/m3)

Gasmerkmale

Toxic and irritating: NO2 is a dangerous gas that can damage the eyes and respiratory tract.
Brown colour: A characteristic brown colouration occurs at higher concentrations.
Origin: The main source of nitrogen dioxide is the combustion of fossil fuels, for example in vehicles and industrial plants.
Solubility: NO2 is soluble in water, producing nitric acid, which can result in acid rain.
Harmful to the environment: It is a factor in the formation of ground-level ozone and air pollution.

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Questions about nitrogen dioxide detection?

SOURCES OF HAZARD

Air pollution: In urban areas, high NO2 levels can significantly reduce air quality and cause health problems.
Respiratory tract irritation: Nitrogen dioxide can irritate the respiratory tract, which can lead to coughing, shortness of breath and long-term lung damage.
Acid rain: NO2 is a factor in the formation of acid rain, which can damage soil, water and buildings.
Ozone formation: NO2 serves as a precursor for the formation of ground-level ozone, which can be harmful to health.
Explosion dangerous: NO2 can cause an explosion in high concentrations when combined with certain substances.

High-risk scenarios

Traffic-related NO2 emissions: In urban areas, traffic is often the cause of high NO2 levels, which reduces air quality and can exacerbate health problems such as asthma and lung disease.
Industrial emissions: In industrial plants where fossil fuels are burned, uncontrolled NO2 emissions can occur, endangering the environment and the health of workers.
Air pollution in bad weather: A light breeze and a strong inversion can cause NO2 and other pollutants to concentrate in the air, increasing the health risk.
Explosion hazard: At high concentrations, NO2 can react with other substances and thus cause an explosion hazard, especially in industrial plants.
Acid rain: High NO2 emissions can cause acid rain, which damages soil, water and buildings, resulting in long-term environmental damage.

Health risks and handling of nitrogen dioxide

Konzentration

Konzentration	Symptome/folgen
few ppb	Outdoors
From 100 ppb	Dangerous concentrations
Ab 200 ppb	health risk

Konzentrationstabelle nur im Querformat sichtbar.

Erste Hilfe

1. Fresh air supply:

Immediately move the affected person to fresh air to end NO2 exposure and facilitate breathing.

2. Keep calm:

Reassure the person and ensure they are sitting or upright to facilitate breathing.

3. Unconsciousness:

Place unconscious persons in the recovery position to secure the airways and prevent suffocation.

4. Make an emergency call:

Call the emergency services immediately and report nitrogen dioxide poisoning to get prompt medical assistance.

5. Medical treatment:

To treat possible lung damage, the affected person should be taken to hospital for further treatment.

Bei Unbeabsichtigter Freisetzung

1. Evacuation:

Clear the affected area immediately to avoid the risk of exposure.

2. Ventilation:

Ventilate the room well to dilute the NO2 gas and reduce its concentration.

3. Avoid ignition sources:

Immediately remove all open flames and sources of sparks to prevent explosions or fires.

4. Wear protective equipment:

Wear protective equipment such as respirators and gloves when handling the release.

5. Make an emergency call:

Call the emergency services immediately and report the release of nitrogen dioxide to request professional assistance.

6. Air quality monitoring:

Monitor air quality regularly until the concentration of NO2 has been reduced to safe levels.

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nitrogen dioxide

Nitrogen dioxide and its properties

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