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Analyzing the Photo-oxidation of 2-propanol at Indoor Air Level Concentrations Using Field Asymmetric Ion Mobility Spectrometry
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Reactivity-based VOC control for solvent products: more efficient ozone reduction strategies
1PCA Services Inc, Durham, North Carolina 27705, USA. rjavery@chartertn.net
Environmental Science & Technology
|September 8, 2006
Summary
Volatile organic compounds (VOCs) vary in their ozone-forming potential. A new reactivity-based approach to VOC control policy is more efficient and cost-effective than traditional mass-based regulations.
Area of Science:
- Environmental Chemistry
- Atmospheric Science
- Air Quality Management
Background:
- Scientific and regulatory recognition of varying ozone-forming potentials of volatile organic compounds (VOCs) dates back nearly 40 years.
- Understanding of VOC mechanisms in ozone formation has significantly advanced since 1977.
- Current scientific knowledge supports a more efficient VOC control policy.
Purpose of the Study:
- To advocate for a shift towards reactivity-based VOC control policies.
- To highlight the potential for smarter, more cost-effective VOC controls.
- To encourage the integration of recent scientific information on VOC photochemical reactivity into State Implementation Plans (SIPs).
Main Methods:
- Assessment of scientific understanding regarding VOCs and ozone formation.
- Review of existing reactivity-based regulations (e.g., California Air Resources Board's Aerosol Coatings Rule).
- Analysis of case studies (e.g., Houston's approach to high-reactivity VOCs).
Main Results:
- Sufficient scientific understanding exists to implement a more efficient VOC control approach.
- Reactivity-based regulations have proven more effective and efficient in specific applications compared to mass-based rules.
- The U.S. EPA's Interim Guidance encourages the consideration of VOC reactivity in SIPs.
Conclusions:
- A new paradigm in VOC control, focusing on ozone-forming potential rather than mass emitted, is achievable.
- Collaboration among regulators, industry, and stakeholders is crucial for accelerating this transition.
- Implementing reactivity-based controls offers a pathway to more effective and economically sound air quality management.
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