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Air Quality Surveillance Branch

Explore monitoring methods for air pollutants; from manual samplers to continuous instruments. Learn about particulate matter, toxic air contaminants, hydrocarbon compounds, and acid deposition monitoring. Discover sampling techniques and quality assurance protocols.

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Air Quality Surveillance Branch

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  1. Air Quality Surveillance Branch • Air Monitoring Operations • Manual and Non-criteria Samplers • Reggie Smith • Special Purpose Monitoring & Data Support Section California Environmental Protection Agency Air Resources Board

  2. Ambient Air Monitoring Programs (cont.) • Particulate Matter • Toxic Air Contaminants • Hydrocarbon Compounds • Acid Deposition

  3. Types of Instruments • Manual Samplers • Time averaged data • Sampling Media • Filter samples • Cartridges • Canisters • Analyzed in separate step • Continuous Samplers • Instrumental methods • On-line data

  4. Particulate Monitoring • Particulate Matter • < 10 micrometers and < 2.5 micrometers • Size Fractional Particulate Matter • 0- 2.5 and 2.5 - 10 microns • Total Suspended Particulate • Continuous Particulate Sampler • Coefficient of Haze • Relative Visibility

  5. Particulate Standards Federal State PM2.5 65 ug/m3 15 ug/m3 24 hr Annual PM10 24 hr Annual 150 ug/m3 50 ug/m3 50 ug/m3 30 ug/m3

  6. HighVolume Sampler w/Size Selective Inlet

  7. PM10 Filter Handling Procedure • Filters are weighed pre and post sampling • Filters are inspected for tears, pinholes, frayed edges, clumps of fibers, discoloration

  8. Fine Particulate Matter - PM2.5 • 1997, U.S. EPA promulgates new fine particulate standards • ARB implementing new PM2.5 monitoring network • Samplers • Andersen Sequential and R&P Single Channel • Sampling Media • 47 mm teflon filters

  9. PM2.5 Federal Reference Method Sampler

  10. WINSWell Impactor-NinetySix

  11. PM10 - Dichotomous Sampler

  12. PM 10Inlet

  13. VirtualImpactor

  14. Total Suspended Particulate Sampler

  15. PM-10 Tapered Element Oscillating Microbalance

  16. Coefficient of Haze

  17. Relative Visibility • Nephelometer • Detects the amount of light scattered by suspended particles

  18. Toxic Air Contaminants Monitoring • High Volume Size Selective Inlet Sampler • High Volume Total Suspended Particulate Sampler • Multimedia Sampler • Canister Sampler

  19. Multimedia Sampler (XonTech 920)

  20. Canister Sampler (Xontech 910)

  21. Hydrocarbon Compounds • Modified Canister Sampler • Continuous Hydrocarbon Sampler • Carbonyl Sampler

  22. Continuous Hydrocarbon Sampler

  23. Carbonyl Sampler • Photochemical Assessment Monitoring Stations (PAMS) • Silica Sampling Cartridge • Four 3 hour samples (2300-0200, 0500-0800,1200-1500, 1600-1900 PST) • 11 sites

  24. CADMP Wet Deposition Sampler

  25. CADMP Dry Deposition Sampler

  26. References • 40 CFR 50, 53, 58 • CARB Air Monitoring Quality Assurance • Volume II: Standard Operating Procedures for Air Quality Monitoring • Instrument Manuals • Internet Sites • CARB (http://www.arb.ca.gov) • EPA (http://www.epa.gov) • AWMA (http://www.awma.org)

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