Ion Chemistry of C10no2 Involving NO3(-) Core Ions: A Detection Scheme for ClONOsub2 in the Atmosphere

Rate constants and product branching ratios for reactions involving atmospherically interesting ions and ClONO2 have been measured. H3O(+) reacts rapidly with ClONO2, but the hydrates of H3O(+) do not. This implies that ClONO2 does not play a central role in the positive ion chemistry of the atmosph...

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Bibliographic Details
Main Authors: Viggiano, A. A., Morris, Robert A., Van Doren, Jane M.
Other Authors: PHILLIPS LAB HANSCOM AFB MA
Format: Text
Language:English
Published: 1994
Subjects:
Atmospheric Physics
Physical Chemistry
*ATMOSPHERIC DISTURBANCES
*CHEMICAL REACTIONS
*CHLORINE COMPOUNDS
IONS
CHLORINE
NITRATES
ION MOLECULE INTERACTIONS
HYDROGEN CHLORIDE
MASS SPECTROMETRY
STRATOSPHERE
EARTH ATMOSPHERE
HYDRATES
REPRINTS
CHLORINE NITRATE
ION CHEMISTRY
SERDP COLLECTION
SERDP(STRATEGIC ENVIRONMENTAL RESEARCH AND DEVELOPMENT PROGRAM)
PE61102F
WUPL2303GJ01
Antarctic
The Antarctic
Antarc*
Online Access:http://www.dtic.mil/docs/citations/ADA280954
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA280954
Description
Summary:Rate constants and product branching ratios for reactions involving atmospherically interesting ions and ClONO2 have been measured. H3O(+) reacts rapidly with ClONO2, but the hydrates of H3O(+) do not. This implies that ClONO2 does not play a central role in the positive ion chemistry of the atmosphere. CO3(-) reacts with ClONO2 to form NO3(-). Both NO3(-) and NO3(-)(H2O) react with ClONO2 to form NO3(-)(ClONO2). H2O does not react with NO3(-)(ClONO2), which is essential to the proposed in situ measurement technique. NO3(-)(ClONO2), does react with HNO3 and HCl, producing NO3(-)(HNO3) in both cases. The reaction of NO3(-)(HCl) with ClONO2 also produces NO3(-)(HNO3). These latter two efficient reactions, which are discussed in detail in a separate publication, are analogous to the efficient neutral heterogeneous reaction of HCl with ClONO2 which is important in the chemistry of the Antarctic stratosphere. A detection scheme is presented for atmospheric ClONO2 based on the reactions studied and utilizing mass spectrometry. A ClONO2 detection limit of 10 to the 7th power molecules cm to the minus 3rd power is estimated based on the operating characteristics of current ion-molecule based mass spectrometric field instruments. Pub. in Journal of Geophysical Research, v99 nD4 p8221-8224, 20 Apr 1994.

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