NOy and Components of NOy by Gas Phase Titration and NO2 Analysis with Background Correction

摘要

A method for quantifying nitrogen-containing species from an atmospheric sample includes introducing the atmospheric sample into an NO₂-analyzer to obtain a first measurement; subjecting the atmospheric sample to thermal decomposition followed by introducing the atmospheric sample into the NO₂-analyzer to obtain a second measurement; subjecting the atmospheric sample to ozone titration and thermal decomposition followed by introducing the atmospheric sample into the NO₂-analyzer to obtain a third measurement; subjecting the atmospheric sample to excess ozone followed by introducing the atmospheric sample into the NO₂-analyzer to obtain a fourth measurement; and subjecting the atmospheric sample to a catalyst at an elevated temperature followed by introducing the atmospheric sample into the NO₂-analyzer to obtain a fifth measurement.