Interpretation and Data Quality Evaluation of Hourly Measurement of Target VOCsby AutoGC/MS at the New Hendersonville, TN., Southern Oxidants Study Site, June 17-27, 1995

摘要

The North American Research Strategy for Tropospheric Ozone (NARSTO) program hassponsored the development and evaluation of monitoring methods for volatile organic compounds (VOCs) that are associated with the formation of tropospheric ozone. Target VOC lists have been developed that are designed to be reflective of the VOCs of concern in ozone formation. These lists are evolving as understanding of the process develop. Our samples were analyzed for a target list that included the 57 ozone precursor compounds, the 41-compound TO-14 list, ad 10 selected aldehydes. Two fielddeployed autoGC systems were deployed at the New Hendersonville, TN, site which was one of the intensive measurement sites of the 1995 Southern Oxidants study. This site approximately 15 mi northeast of Nashville, was selected to be a downwind site, although, as data in a companion paper demonstrated, this was rarely the case for the June 17-27 period that we made measurements. In this paper, quality assurace issues related to the calibration, sampling integrity are artifacts are discussed, and quantitative measures of data quality are described. Canister and sorbent tube samples were also taken concurrently with some of the hourly measurements, and the concurrent measurements are compared in this paper.