抄録
A simple and rapid measurement method of light intensity for photoirradiation experiment in laboratory was investigated. It is an indirect method using commercially available silicon photocell (SPC) which is able to detect very weak light, and is utilizing linear relationship between output of SPC and rate constant of NO2 photolysis (κ1). Correlation coefficients between the output of SPC and each of the rate constants of NO2 photolyses in N2 using a batch reactor (Tedlar bag) (κ1 (N2)) and in air (N2: O2=80: 20) using a flow reactor (quartz tube) (κ1 (air)) were 0.997 and 0.998, respectively. This method allows continuous monitoring of light intensity and detection of the decay of light intensity during photoirradiation experiment.
