Abstract Colloidal particles are a very important research object in natural science. Due to the effect of gravitational potential field, colloidal particles are not uniformly distributed (assuming Boltzmann distribution). In order to investigate the influence of Boltzmann distribution on the test results, the Boltzmann distribution of silica with three particle sizes (20 nm, 50 nm and 100 nm) under the effect of gravitational potential field is discussed by theoretical calculation, that is, the variation of concentration with height, and compared with the average concentration. The results show that the larger the particle, the greater the influence of gravity potential field on particle distribution, and the greater the error of test results. Finally, through theoretical calculation, this paper points out that reasonable selection of particle type and particle size can reduce the influence of Boltzmann distribution on the test results.
ZHANG Xiao-Jin, DAI Yu, XIA Fan. Error Analysis of Boltzmann Distribution of Colloidal Particles in Measurement[J]. Chinese Journal of Chemical Education, 2022, 43(12): 121-123.
