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Review of Federal Reference Method for Ozone: Nitric Oxide-Chemiluminescence:Supplemental Material for CASAC AMMS
Citation:
Long, R., M. Beaver, R. Duvall, EricS Hall, AND S. Kaushik. Review of Federal Reference Method for Ozone: Nitric Oxide-Chemiluminescence:Supplemental Material for CASAC AMMS. CASAC AMMS Teleconference on Federal Reference Method for Ozone, Washington, DC, June 12, 2014.
Impact/Purpose:
The National Exposure Research Laboratory (NERL) Human Exposure and Atmospheric Sciences Division (HEASD) conducts research in support of EPA mission to protect human health and the environment. HEASD research program supports Goal 1 (Clean Air) and Goal 4 (Healthy People) of EPA strategic plan. More specifically, our division conducts research to characterize the movement of pollutants from the source to contact with humans. Our multidisciplinary research program produces Methods, Measurements, and Models to identify relationships between and characterize processes that link source emissions, environmental concentrations, human exposures, and target-tissue dose. The impact of these tools is improved regulatory programs and policies for EPA.
Description:
ApproachPer suggestion made by CASAC AMMS members during the April 3, 2014 conference call on the Review of Federal Reference Method for Ozone: Nitric Oxide-Chemiluminescence, ORD has performed additional data analysis activities to explain and mitigate scatter observed in the comparisons of the FRM vs. NO-CL methods.In April 2014, an additional research study began at the EPA/AIRS sampling site in Research Triangle Park, NC comparing ambient ozone results obtained from the current FRM and potential FRM candidates including the NO-CL and the SL-UV methods.The attached figures give the results from the further data analysis performed by ORD and also early results from the Spring 2014 study.ConclusionBased upon the work that has been done to date and this subsequent data analysis, ORD is confident that the NO-CL method meets and exceeds all requirements for proposal as a new FRM for ozone.
URLs/Downloads:
CASAC AMMS SUPPLEMENTAL SLIDES 05-05-14 CLEAN.PDF (PDF, NA pp, 2219.107 KB, about PDF)CASAC AMMS SUPPLEMENTAL SLIDES 05-05-14 CLEAN -WITH ROY'S COMMEMTS.PDF (PDF, NA pp, 1643.506 KB, about PDF)