Methods for preparing standard nitrate radical (NO 3) gas to calibrate the LIF-based instrument for measurements in the atmosphere

Jun Matsumoto, Hidekazu Imai, Naohiro Kosugi, Yoshizumi Kajii

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Preparation of standard NO 3 gas is explored at the level of ppbv for atmospheric measurements utilizing an LIF instrument. The sequence of thermal decomposition of N 2O 5 and gas phase titration of NO 3 by adding NO is useful. To reduce NO 2 contamination in N 2O 5, N 2O 5 trapping after mixing NOx and O 3 was adopted. As a convenient method in the field studies, dynamic mixing of NOx and O 3 was explored.

Original languageEnglish
Article numberCL-050605
Pages (from-to)1214-1215
Number of pages2
JournalChemistry Letters
Issue number9
Publication statusPublished - 2005 Sep 5
Externally publishedYes


ASJC Scopus subject areas

  • Chemistry(all)

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