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[Organic and elemental carbon in atmospheric particles]
Luca Lepore1, Domenico Brocco, Pasquale Avino
1Dipartimento Insediamenti Produttivi ed Interazione con l'Ambiente, Istituto Superiore per la Prevenzione e la Sicurezza del Lavoro, Roma.
Annali Dell'Istituto Superiore Di Sanita
|April 22, 2004
Summary
This study measured organic carbon (OC) and elemental carbon (EC) in Rome, finding similar trends downtown and in Villa Ada park. However, the park showed a greater influence of secondary pollutants on carbonaceous particulate matter.
Area of Science:
- Environmental Science
- Atmospheric Chemistry
- Particulate Matter Analysis
Context:
- Atmospheric particulate matter, particularly carbonaceous material, originates from combustion processes.
- This material comprises organic carbon (OC) and elemental carbon (EC), differing in oxidation resistance.
- Respirable particulate matter poses significant environmental and health concerns.
Purpose:
- To quantify and compare concentrations of OC and EC in downtown Rome versus a park (Villa Ada).
- To analyze the temporal trends of OC and EC in urban and park environments.
- To investigate the contribution of secondary pollutants to carbonaceous particulate matter.
Summary:
- OC and EC concentrations were measured in downtown Rome and Villa Ada park using a thermal analyzer.
- Temporal trends of EC and OC in downtown Rome showed strong agreement (correlation 0.86-0.90).
- Comparisons with Villa Ada revealed a distinct contribution from secondary pollutants, with carbonaceous fractions of 30-40% downtown and 20-25% in the park.
Impact:
- Provides valuable data on carbonaceous particulate matter composition in urban and green spaces.
- Highlights differences in pollution sources between city centers and parks.
- Informs strategies for air quality management and understanding pollutant dynamics.