Abstract
This report is written about the mechanism of making particles in colloidal solution. It was reported, believed that the numbers of nuclei and their growth rate were very important in deciding the process. However, it became clear that the nucleation process was more important for gold particles. The mass balance data of gold was successfully obtained by sedimentation field flow fractionation, and whole gold contents of chloroauric (III) acid became solid particles in the range of our experiment.
Chloroauric (III) acid was supplied to the gold becoming the particles and sodium citrate was a reducing agent. In this case, the numbers of nuclei were linearly proportional to the concentration of sodium citrate and the 2 / 3 power of chloroauric (III) acid concentration.
