Determination of the rate constant of the reaction of NO3 with C2H5I using time-resolved cavity ring-down spectroscopy

• Published in: Chemical physics letters Vol. 535; pp. 26 - 29
• Main Authors: Nakano, Yukio, Hosho, Yuichi, Sadamori, Kengo, Ishiwata, Takashi
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 11.05.2012
• ISSN: 0009-2614; 1873-4448
• DOI: 10.1016/j.cplett.2012.03.040

[Display omitted] ► The rate constant of the reaction of NO3 with C2H5I was reported for the first time. ► Time resolved cavity ring-down spectroscopy was applied to kinetic study. ► NO3+C2H5I would play an important role in the iodine cycle at night. The reaction of NO3 with C2H5I was studied using time-resolved cavity ring-down spectroscopy. The rate constant of NO3+C2H5I reaction was determined to be (2.4±0.4)×10−13cm3molecule−1s−1 at 298K and showed no pressure dependence in the range of 25–100Torr of N2 diluent. The determined value of the rate constant suggests that the reaction of NO3 with C2H5I would play an important role in the iodine cycle at night.