OPEN ACCESS

Articles online

Evolution of PM2.5 Measurements and Standards in the U.S. and Future Perspectives for China

Category: Articles

Volume: 13 | Issue: 4 | Pages: 1197-1211
DOI: 10.4209/aaqr.2012.11.0302
PDF | RIS | BibTeX

Junji Cao 1, Judith C. Chow1,2, Frank S.C. Lee3, John G. Watson1,2

  • 1 Key Laboratory of Aerosol Science and Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, China
  • 2 Division of Atmospheric Sciences, Desert Research Institute, Reno, NV, USA
  • 3 Department of Civil and Structural Engineering, Hong Kong Polytechnic University, Kowloon, Hong Kong

Abstract

National Ambient Air Quality Standards (NAAQS) were first established in the United States to protect public health and welfare, and the concept has been adopted in China and many other countries. For particulate matter (PM), the NAAQS indicator evolved from total particle mass concentration, to PM10 and PM2.5 mass concentrations as defined by the PM size-selective properties of the monitoring instrument and human inhalation characteristics. Particle measurements started with optical microscopy in the early 18th century, and scientific research over the past 300 years has related particles to adverse environmental and health effects. Several options for PM2.5 measurement and assessment are available to China and other developing countries as they implement new PM2.5 ambient air quality standards. Although much can be learned from the experience of North America and Europe, China can leapfrog ahead in terms of PM2.5 monitoring and emission reduction technology. China-specific guidance documents should be created for network design, equipment selection and operation, quality control and quality assurance, database management, and interpretation. Future air quality management and standards will need to consider multiple pollutants and their effects on visibility, climate, materials, and ecosystems in addition to the primary concerns about public health.

Keywords

PM2.5 PM10 Aerosol sampling Size-selective inlets Multipollutant NAAQS


Related Article

Critical Emissions from the Largest On-Road Transport Network in South Asia

Saroj Kumar Sahu , Gufran Beig, Neha Parkhi
Volume: 14 | Issue: 1 | Pages: 135-144
DOI: 10.4209/aaqr.2013.04.0137
PDF

Ambient Air Quality during Diwali Festival over Kolkata – A Mega-City in India

A. Chatterjee , C. Sarkar, A. Adak, U. Mukherjee, S.K. Ghosh, S. Raha
Volume: 13 | Issue: 3 | Pages: 1133-1144
DOI: 10.4209/aaqr.2012.03.0062
PDF