%0 Journal Article %1 Suh:2000p3132 %A Suh, I %A Zhang, RY %D 2000 %J Journal of Physical Chemistry A %K Atoms, Cl Hydrocarbons, Impact, Molecular-Oxygen, Ozone, Pressure, Radicals Rates, Troposphere, %N 28 %P 6590--6596 %T Kinetic studies of isoprene reactions initiated by chlorine atom %U http://www.google.com/search?client=safari&rls=en-us&q=Kinetic+studies+of+isoprene+reactions+initiated+by+chlorine+atom&ie=UTF-8&oe=UTF-8 %V 104 %X The degradation reactions of isoprene initiated hv chlorine atom were investigates using a fast-flow reactor coupled to chemical ionization mass spectrometry (CIMS) detection. The kinetic studies were performed in the pressure range of 5 to 10 Torr and at 298 +/- 2 K. The rate constant for the reaction between Cl and isoprene was measured to be (4.0 +/- 0.3) x 10(-10) cm(3) molecule(-1) s(-1). Using the CIMS method, we were able to directly detect the products of the Cl-isoprene reaction, HCl and Cl-isoprene adduct. A branching ratio of (17.4 +/- 4.0)% was determined for the HCl formation. We have also measured the rate constant for the reaction of the Cl-isoprene adduct with molecular oxygen to form the beta-chloroalkenylperoxy radicals, with a value of (1.0 +/- 0.3) x 10(-14) cm(3) molecule(-1) s(-1). Atmospheric implications of the present experimental results are discussed.

@article{Suh:2000p3132, abstract = {The degradation reactions of isoprene initiated hv chlorine atom were investigates using a fast-flow reactor coupled to chemical ionization mass spectrometry (CIMS) detection. The kinetic studies were performed in the pressure range of 5 to 10 Torr and at 298 +/- 2 K. The rate constant for the reaction between Cl and isoprene was measured to be (4.0 +/- 0.3) x 10(-10) cm(3) molecule(-1) s(-1). Using the CIMS method, we were able to directly detect the products of the Cl-isoprene reaction, HCl and Cl-isoprene adduct. A branching ratio of (17.4 +/- 4.0)% was determined for the HCl formation. We have also measured the rate constant for the reaction of the Cl-isoprene adduct with molecular oxygen to form the beta-chloroalkenylperoxy radicals, with a value of (1.0 +/- 0.3) x 10(-14) cm(3) molecule(-1) s(-1). Atmospheric implications of the present experimental results are discussed.}, added-at = {2010-06-22T19:38:37.000+0200}, affiliation = {Texas A{\&}M Univ, Dept Atmospher Sci, College Stn, TX 77843 USA}, author = {Suh, I and Zhang, RY}, biburl = {https://www.bibsonomy.org/bibtex/2bb2aa3fdcb081b14a87a23f6384789cd/gsmith}, date-added = {2010-04-28 13:20:04 -0400}, date-modified = {2010-04-28 13:20:16 -0400}, interhash = {94c1ccfe89201edf03725e47d92cd9e5}, intrahash = {bb2aa3fdcb081b14a87a23f6384789cd}, journal = {Journal of Physical Chemistry A}, keywords = {Atoms, Cl Hydrocarbons, Impact, Molecular-Oxygen, Ozone, Pressure, Radicals Rates, Troposphere,}, language = {English}, local-url = {file://localhost/Users/geoffreysmith/Documents/Papers/Journal%20of%20Physical%20Chemistry%20A/2000/Journal%20of%20Physical%20Chemistry%20A,%20104,%206590-6596%202000.pdf}, month = Jan, number = 28, pages = {6590--6596}, pmid = {000088368200010}, rating = {0}, timestamp = {2010-06-22T19:39:14.000+0200}, title = {Kinetic studies of isoprene reactions initiated by chlorine atom}, uri = {papers://E88B624E-D406-46FF-9D95-BB9C1AAE3FDC/Paper/p3132}, url = {http://www.google.com/search?client=safari&rls=en-us&q=Kinetic+studies+of+isoprene+reactions+initiated+by+chlorine+atom&ie=UTF-8&oe=UTF-8}, volume = 104, year = 2000 }