Development and Application of Chemical Actinometer to Measure of Light Intensity in Photo-Sterilizer

近年来，人们开始关注有害有机物的光分辨工艺，以253.7nm低压汞块为光源的主波长光杀菌工艺。希望建立一种简便的光强测量方法。因此，本研究以孟加拉玫瑰水溶液为原料，进行了测量光强的化学光度计研制实验。通过间歇式操作改变初始浓度、反应温度、光源与反应器之间的距离，从光照射时间与反应浓度的关系中寻找反应特征。其次，利用该光照度计从光照强度方面考察了TiO_2光催化薄膜对大肠菌群灭活速率的影响。结果它发现了下面的事情。反应的初始浓度和反应温度决定了该反应为二级反应。反应速率降低

Recently, it pays attention to the photo resolution process of the harmful organic substance, the photo sterilization process that a main wavelength made the low pressure mercury lump of 253.7nm as light source. It is hoping for the establishment of the way of measuring it easily of the light intensity.So, the development experiment of chemical actinometer to measure the light intensity was done by using the Rose Bengal aqueous solution in this research. Reaction characteristics was look for from the relations between the photo irradiation time and the concentration when initial concentration, reaction temperature, distance of between the light source and the reactor were changed by the batch operation. Next, it was examined about the influence exerted on the extinction rate of the coliform bacillus that TiO_2 photo catalytic thin film by using this actinometer from the illumination intensity side.It found out the following thing as a result. A reaction was second order reaction, depended on the initial concentration and reaction temperature. Reaction rate decreased