Timothy J. Johnson

TL;DR: The National Institute of Standards and Technology and the Pacific Northwest National Laboratory are each creating quantitative databases containing the vapor-phase infrared spectra of pure chemicals, and the two databases include different classes of compounds and were compared using 12 samples.

TL;DR: In this paper, the effects of various vacancy and substitution defects in a coronene parent molecule have been systematically analyzed using density functional theory (DFT), and the impacts of these defects are best understood in terms of a reduced symmetry as compared to a “parent” coronene molecule.

TL;DR: The most comprehensive measurement of biomass burning emissions to date and it should enable improved representation of smoke composition in atmospheric models is presented in this article, where the results support a recent estimate of global NMOC emissions from biomass burning that is much higher than widely used estimates and they provide important insights into the nature of smoke.

TL;DR: In this paper, a large suite of state-of-the-art instrumentation including an open-path Fourier transform infrared (OP-FTIR) spectrometer was used for measurement of gas-phase species.

TL;DR: In this paper, the authors measured trace gas emission factors from seven prescribed fires in South Carolina (SC), US, using two Fourier transform infrared spectrometer (FTIR) systems and whole air sampling (WAS) into canisters followed by gas-chromatographic analysis.