The real time air quality monitoring network is complemented by a passive diffusive tube network. The Environment and Resources Authority (ERA) has deployed 100 NO2 tubes and 100 volatile organic compounds (VOC) tubes throughout Malta and Gozo. The tubes are exposed for a period of 4 weeks (for a total of 13 exposure periods in one year) after which they are sent to a laboratory for analysis. The annual averages can then be interpolated to provide pollution maps as follows:
- Environmental Themes
- National Strategy for the Environment
- State of the Environment
- National State of the Environment
- Global State of the Environment
- Mediterranean State of the Environment
- European State of the Environment
- Air
- Air Quality and National Emissions
- Awareness Campaigns
- Environmental Noise
- Environmental Noise
- Awareness Campaigns
- Ionising Radiation
- Land
- Geology & Minerals
- Soil
- Land Degradation, Desertification & Drought
- Landscapes & Geomorphology
- Nature
- Biodiversity
- Species
- Habitats
- Important Natural Areas
- GMO & Biosafety
- Invasive Alien Species
- Waste
- Framework Regulations
- Waste Movement & Treatment
- Waste Streams
- Waste Statistics
- Water
- Overview
- Legal Framework
- Assessment & Management
- Monitoring
- Horizontal Cross-Cutting Issues
- Information, Participation & Justice
- Environment Liability
- Environmental Assessment
- Environmental Permitting
- Environmental Compliance and Enforcement
