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Updated: Jul 26, 2026
11:18
A Practical Guide on Coupling a Scanning Mobility Sizer and Inductively Coupled Plasma Mass Spectrometer (SMPS-ICPMS)
Published on: July 11, 2017
Time resolved characterization of diesel particulate emissions. 1. Instruments for particle mass measurements
H Moosmüller1, W P Arnott, C F Rogers
1Desert Research Institute, University of Nevada System, 2215 Raggio Parkway, Reno, Nevada 89512. hansm@dri.edu
Environmental Science & Technology
|May 15, 2001
Summary
New methods enable real-time measurement of diesel exhaust particulate mass, overcoming limitations of traditional filter collection. These advancements allow for detailed study of emissions during transient operating conditions using advanced technologies.
Area of Science:
- Environmental science
- Mechanical engineering
- Analytical chemistry
Background:
- Current diesel exhaust particulate mass measurement relies on Code of Federal Regulations (CFR) filter methods.
- These methods have limited time resolution (several minutes), hindering transient condition emission studies.
Purpose of the Study:
- To evaluate fast-response measurement techniques for diesel exhaust particulate mass.
- To demonstrate the feasibility of real-time measurements consistent with CFR standards using existing technology.
Main Methods:
- Testing of five different measurement methods for diesel exhaust particulate mass.
- Focus on tapered element oscillating microbalance (TEOM) for real-time weighing and DustTrak nephelometer for light scattering measurement.
Main Results:
- Both TEOM and DustTrak demonstrated feasibility for fast response measurements.
- TEOM offers constant, vehicle-independent calibration; DustTrak provides excellent signal-to-noise and simplicity.
- Complementary strengths suggest integrating TEOM's calibration with DustTrak's real-time signal.
Conclusions:
- Fast response measurement of diesel exhaust particulate mass is achievable with current technology.
- Integrating TEOM and DustTrak offers a robust solution for detailed emission analysis during transient conditions.
- This integrated approach enhances the study of diesel emissions with improved time resolution and accuracy.
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