Abstract
A highly selective and sensitive detector for measuring organic nitrates in atmospheric air samples has been developed. This detector is based on the luminol chemiluminescence-based detection of NO 2 produced by postcolumn thermal decomposition of organic nitrates. Determination of the relative detector sensitivities to C 3 -C 6 alkyl nitrates, α,β-hydroxy nitrates, α,β-dinitrates, and several mono- and multinitro aromatic compounds as well as N-nitrosodimethylamine has been conducted. The detector is shown to produce one NO 2 per molecule at a pyrolysis temperature of 350 o C, yielding identical sensitivities for alkyl and hydroxy nitrates, consistent with the known thermal decomposition pathway and thermal lifetimes at this temperature
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