Elsevier, Atmospheric Environment, (88), p. 155-156, 2014
DOI: 10.1016/j.atmosenv.2014.02.004
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An artefact of the detection of nitric acid (HNO3) by denuder methods is discussed. This artefact arises from the likely reaction of dinitrogen pentoxide (N2O5) on the denuder train resulting in the report of some fraction of N2O5 as HNO3.