Identification of a peroxynitrate intermediate, CH(3)S(O)(x)O(2)NO(2), in the tropospheric oxidation of DMS
A laboratory study was performed in order to find the exact molecular formula of a relatively stable peroxynitrate intermediate, (CH(3)S(O)(X)O(2)NO(2)) formed in the tropospheric oxidation of DMS (dimethyl sulphide) initiated by the reaction with the OH or NO(3) radical. The experiments were performed in a 480 L evacuable Teflon coated reaction chamber and the analytical techniques applied were FTIR and TDL (tunable diode laser) spectroscopy. The peroxynitrate compound was formed in the chamber by the NO(3) initiated oxidation of DMS and was detected using FTIR measuring its known spectral features at 777/cm, 1303/cm and 1768/cm. Seen in the light of the reaction scheme expected for the decay of the peroxynitrate, this result leads to the conclusion that the peroxynitrate is CH(3)S(O)(2)O(2)NO(2). Consequences for the understanding of the atmospheric oxidation of DMS are discussed.
Bibliographic Reference: Article: Geophysical Research Letters
Record Number: 199510956 / Last updated on: 1995-08-10
Original language: en
Available languages: en