This tube is suitable for passive monitoring of Ozone (O3). Ground-level Ozone is not emitted directly but forms due to chemical reactions in the atmosphere involving hydrocarbons (C8 or lower), Nitrogen Oxides and sunlight. Therefore, hot summer days often lead to higher Ozone concentrations.

Sources of Ozone:

• Natural sources.
• Industrial emissions.
• Vehicle exhausts.
• Fuel vapours.
• Solvents
• Combustion processes.

Potential implications of Ozone pollution:

• Respiratory irritation and reduced lung function, particularly in children.
• Vegetation damage – leaf damage, reduced food production in commercial crops, increased susceptibility to disease.

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