![Gas phase reaction of selected isothiocyanates with OH radicals using a smog chamber-mass analyzer system [An article from: Atmospheric Environment]](https://www.ebooknetworking.net/books/B00/0RR/bigB000RR93YK.jpg)
Gas phase reaction of selected isothiocyanates with OH radicals using a smog chamber-mass analyzer system [An article from: Atmospheric Environment]
Book Details
Author(s)R. Sommerlade, P. Ekici, H. Parlar
PublisherElsevier
ISBN / ASINB000RR93YK
ISBN-13978B000RR93Y2
AvailabilityAvailable for download now
Sales Rank99,999,999
MarketplaceUnited States 🇺🇸
Description
This digital document is a journal article from Atmospheric Environment, published by Elsevier in 2006. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
Relative rate constants for the gas phase reaction of methyl isothiocyanate (1), ethyl isothiocyanate (2), allyl isothiocyanate (3), phenyl isothiocyanate (4), 2-methylphenyl isothiocyanate (5), benzoyl isothiocyanate (6), and 4-methoxyphenyl isothiocyanate (7) with OH radicals have been determined at 297+/-2K and 9.21x10^-^2Atm in a 20L smog chamber-coupled online with a quadrupole mass analyzer, in which the concentration of the reaction partners could be determined online every minute. Some of the photoproducts could be detected and identified by HRGC-MS and HRGC-FTIR spectroscopy. The rate constants of the isothiocyanates obtained for the OH radical reactions ranged between 12.8 and 99.5x10^-^1^2cm^3molecule^-^1s^-^1. The indicated errors were of 2-least-squares standard deviations. The lifetimes of the investigated compounds in the troposphere due to reactions with the OH-radicals were calculated and ranged from 3.5 to 18.8h by using the tropospheric concentration of OH radicals of 8.0x10^5moleculescm^-^3 over a period of 24h.
Description:
Relative rate constants for the gas phase reaction of methyl isothiocyanate (1), ethyl isothiocyanate (2), allyl isothiocyanate (3), phenyl isothiocyanate (4), 2-methylphenyl isothiocyanate (5), benzoyl isothiocyanate (6), and 4-methoxyphenyl isothiocyanate (7) with OH radicals have been determined at 297+/-2K and 9.21x10^-^2Atm in a 20L smog chamber-coupled online with a quadrupole mass analyzer, in which the concentration of the reaction partners could be determined online every minute. Some of the photoproducts could be detected and identified by HRGC-MS and HRGC-FTIR spectroscopy. The rate constants of the isothiocyanates obtained for the OH radical reactions ranged between 12.8 and 99.5x10^-^1^2cm^3molecule^-^1s^-^1. The indicated errors were of 2-least-squares standard deviations. The lifetimes of the investigated compounds in the troposphere due to reactions with the OH-radicals were calculated and ranged from 3.5 to 18.8h by using the tropospheric concentration of OH radicals of 8.0x10^5moleculescm^-^3 over a period of 24h.
