Tyndall Phenomenon of Colloidal Sol Under Different Concentrations
LI Wan-Jun1, ZHANG Jing2, GU Xiao-Yuan3
1. Shenyang No.31 Senior High School, Shenyang 110021, China; 2. Key Laboratory of Efficient Chemical Mixing-technology of Liaoning Province of Shenyang University of Chemical Technology, Shenyang 110142, China; 3. School of Petroleum Engineering of China University of Petroleum, Qingdao 266580, China
Abstract In order to investigate the effect of amount-of-substance concentration of colloidal sol on Tyndall phenomenon, the red laser was adopted to form the optical paths at nine concentrations of ferric hydroxide colloid. HSV color mode was used to analyze the images of optical paths. The results showed that the hue and saturation had no relation to the process position of optical paths, on which the intensity value was dependent. Intensity values always decayed along with optical paths when the concentration of colloidal solution was in the range of 0.0846~0.0617 mol/L, and the degree of decaying was proportional to the concentration. However, the intensity values firstly decayed and then elevated along with optical paths when the concentration of colloidal solution was in the range of 0.0555~0.0364 mol/L. The interdependency was periodical between average value of hue and saturation and concentrations of colloidal sol. The variation trend of mean intensity value was reducing, rising and reducing again with the decrease of concentration, and the peak value and valley value of mean intensity value emerged at 0.0405 mol/L and 0.0617 mol/L respectively.
