Research Projects

Project at a Glance

Project Status: active

Title: Air quality impacts of low vapor pressure-volatile organic compounds

Principal Investigator / Author(s): Cocker, David

Contractor: UC Riverside

Contract Number: 13-302

Research Program Area: Atmospheric Processes

Topic Areas: Chemistry & Reactivity

Research Summary:

Low vapor pressure-volatile organic compounds (LVP-VOCs) are ingredients used in some consumer product formulations to meet VOC limits because the ARB Consumer Products Regulations provide an exemption for LVP-VOCs. This exemption was intended to exclude compounds that do not readily participate in ozone formation. However, some recent laboratory testing indicates that certain LVP-VOCs may have previously unrecognized air quality impacts. In light of these findings, research to better understand the atmospheric emissions of LVP-VOCs from consumer products and their impacts on ozone and SOA formation is needed. This research project will investigate the ambient evaporation rates of LVP-VOCs--both as pure compounds and in formulated consumer products sold in California, and conduct environmental chamber studies on selected LVP-VOCs and products that contain them to explore ozone and secondary organic aerosol formation from these compounds. The results will improve estimates of the emission rates of LVP-VOCs and their impacts on air quality, and can be used to improve air quality models. The results will also be used as part of ARBís assessment as to whether the exemption for LVP-VOCs in the Consumer Products Regulations should be modified.


For questions regarding this research project, including available data and progress status, contact: Heather Choi at (916) 322-3893

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