Isotopic composition of nitrate in atmospheric mist chamber samples

We operated the University of New Hampshire (UNH) dual channel mist chamber/ion chromatography system at Summit to measure soluble gases, focusing on soluble bromide and nitric acid and nitrous acid. This system and operational details are described in Dibb et al., 2010, Liao et al., 2012 discuss lab experiments that establish the inorganic bromine compounds contributing to the bromide measured by this technique. Excess sample, not needed for IC analysis, was saved in HDPE bottle for later isotopic analysis.