The determinations of rate constants for the reactions de Cl atoms with organic

compounds could show discrepancy when they are carried out in N2 or air as the diluent

gas. Kaiser and Wallington [1] discovered that the apparent rate constant of reaction

gas. Kaiser and Wallington [1] discovered that the apparent rate constant of reaction

C2H4 + Cl ¨ Products increased when the amount of O2 in the diluent gas was raised.

They observed that O2 affected the measured rate constant indicated that reactions of

C2H4 with radicals other than Cl may occur at low pressures in their relative rate

determinations, leading to erroneous results in the presence of O2. In agreement with

Michael et al. [2] and Tyndall et al. [3], Kaiser and Wallington indicated that the

potential interference is OH radical formed via secondary reactions involving O2 and

that the magnitude of this interference may depend on the total pressure and on the

They observed that O2 affected the measured rate constant indicated that reactions of

C2H4 with radicals other than Cl may occur at low pressures in their relative rate

determinations, leading to erroneous results in the presence of O2. In agreement with

Michael et al. [2] and Tyndall et al. [3], Kaiser and Wallington indicated that the

potential interference is OH radical formed via secondary reactions involving O2 and

that the magnitude of this interference may depend on the total pressure and on the

C2H4 with radicals other than Cl may occur at low pressures in their relative rate

determinations, leading to erroneous results in the presence of O2. In agreement with

Michael et al. [2] and Tyndall et al. [3], Kaiser and Wallington indicated that the

potential interference is OH radical formed via secondary reactions involving O2 and

that the magnitude of this interference may depend on the total pressure and on the

determinations, leading to erroneous results in the presence of O2. In agreement with

Michael et al. [2] and Tyndall et al. [3], Kaiser and Wallington indicated that the

potential interference is OH radical formed via secondary reactions involving O2 and

that the magnitude of this interference may depend on the total pressure and on the

Michael et al. [2] and Tyndall et al. [3], Kaiser and Wallington indicated that the

potential interference is OH radical formed via secondary reactions involving O2 and

that the magnitude of this interference may depend on the total pressure and on the

potential interference is OH radical formed via secondary reactions involving O2 and

that the magnitude of this interference may depend on the total pressure and on the

that the magnitude of this interference may depend on the total pressure and on the

initial reactant concentrations.