Air concentration data for toxic substances like PCBs, PAHs, and organochlorine pesticides collected from monitoring sites across Canada. The dataset is part of the Canadian National Atmospheric Chemistry Database and Analysis System (NAtChem). Environment and Climate Change Canada maintains this collection, which was last updated in May 2026.
Use Cases
- Monitoring trends of toxic organic pollutants in the atmosphere based on concentration data.
- Assessing environmental health risks from specific pollutants like PCBs and PAHs mentioned in the description.
- Correlating pollutant levels with geographic locations based on data from Canadian monitoring sites.
- Supporting regulatory compliance and policy analysis for air quality standards.
Strengths
- Data includes concentrations for multiple toxic substance groups (PCBs, PAHs, flame retardants, organochlorine pesticides).
- Measurements are provided for both gas and particle phases, offering a more complete picture of atmospheric pollution.
- Data is linked to the established Canadian National Atmospheric Chemistry Database and Analysis System (NAtChem).
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Data may reflect geographic bias inherent to its collection from Canadian sites only.
Provenance
- Source
- Environment and Climate Change Canada
- Collection Method
- Likely contains measurements from air monitoring stations.
- Freshness
- Last updated 2026-05-25 14:51:07.411807; freshness should be verified.
- Geography
- Canada