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Introduction to RMW Instruments. Tom Henry RMW Company, Denver CO Tony Hansen Magee Scientific Company, Berkeley CA. Smoke and Exhaust: Aesthetic Impacts. Smoke & exhaust particles absorb and reflect sunlight, contributing to haze

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introduction to rmw instruments

Introduction to RMW Instruments

Tom Henry

RMW Company, Denver CO

Tony Hansen

Magee Scientific Company, Berkeley CA

smoke and exhaust aesthetic impacts
Smoke and Exhaust: Aesthetic Impacts
  • Smoke & exhaust particles absorb and reflect sunlight, contributing to haze
  • Regional haze and visibility management important issues in West
smoke and exhaust listed air toxics
Smoke and Exhaust: Listed Air Toxics
  • Toxic components
    • Specific compounds require specific chemical analyses
    • Analyses cumbersome & expensive
  • Accompanying components may permit more rapid detection by optical means
    • Black soot
    • UV-absorbing material
analytical basis
Analytical Basis
  • Optically-absorbing material an indicator for diesel exhaust, wood- and tobacco smoke
    • “Black” carbon (‘BC’, ‘EC’)
    • “UV-absorbing material” (‘UVPM’)
  • Optical analysis is fast, sensitive, can be performed on-the-spot
optical vs chemical analyses ambient air
Optical vs. Chemical Analyses: Ambient Air

“Six Cities Study”: Harvard School of Public Health

optical vs chemical analyses tobacco smoke
Optical vs. Chemical Analyses: Tobacco Smoke

Report published by Lawrence Berkeley National Laboratory

analytical instrument aethalometer
Analytical Instrument: Aethalometer™
  • While continuously collecting sample, measures optical absorption in real time at 2 wavelengths (880 nm & 370 nm UV)
  • Converts optical absorption to mass concentration of BC and UVPM
  • Real-time data: 1 second / 1 minute / 1 hour
analytical instrument aethalometer2
Analytical Instrument : Aethalometer™

Battery-powered ‘Portable’

summary
Summary
  • Black carbon & UV-absorbing carbon indicate diesel exhaust, wood smoke,tobacco smoke
  • Aethalometer™ uses optical method to measure BC and UVPM in real time
  • Aethalometer on-the-spot data equivalent to standard chemical analyses
acknowledgments
Acknowledgments
  • Harvard School of Public Health
  • Lawrence Berkeley National Laboratory
  • For further information

www.mageesci.com

  • Representative

Tom Henry, RMW Company,

(303) 388-0109