Validation of proton transfer reaction‐mass spectrometry (PTR‐MS) measurements of gas‐phase organic compounds in the atmosphere during the New England Air Quality Study (NEAQS) in 2002

作者：J. A. de Gouw, P. D. Goldan, C. Warneke, W. C. Kuster, J. M. Roberts, M. Marchewka, Steven B. Bertman, Alex Pszenny, W. C. Keene · 发表于：Journal of Geophysical Research Atmospheres · 年份：2003 · DOI：10.1029/2003jd003863 · 被引用次数：325 · 研究领域：Atmospheric chemistry and aerosols、Air Quality and Health Impacts、Air Quality Monitoring and Forecasting

Organic compounds were measured by proton transfer reaction‐mass spectrometry (PTR‐MS) on board the National Oceanic and Atmospheric Administration's research ship Ronald H. Brown during the New England Air Quality Study (NEAQS) in July and August of 2002. PTR‐MS has the potential to measure many important organic species with a fast time response, but its validity has not been proven sufficiently. The results obtained by PTR‐MS during NEAQS were compared with those from (oxygenated) hydrocarbon measurements by gas chromatography/mass spectrometry (GC‐MS), peroxyacyl nitrate measurements by gas chromatography/electron capture detection, and carboxylic acid measurements by mist chamber/ion chromatography. The PTR‐MS and GC‐MS data for methanol, acetonitrile, acetone, isoprene, benzene, and toluene agreed within the measurement uncertainties. The comparison for C8 aromatics and acetaldehyde was less quantitative due to calibration inaccuracies. In addition, PTR‐MS measured the sum of methyl vinyl ketone and methacrolein at 71 amu, the sum of C9 aromatics at 121 amu, and the sum of monoterpenes at 81 and 137 amu. The PTR‐MS signal at 61 amu was found to correlate well with data for acetic acid. The signal at 73 amu correlated reasonably well with methyl ethyl ketone data, but the quantitative disagreement suggested interference from other species, possibly methyl glyoxal. The signal at 77 amu correlated well with data for peroxyacetyl nitrate, and the sensitivity inferred from t...