Devos O, Gabrielli C, Tribollet B
UPR15-CNRS-Physique des Liquides et Electrochimie, Université Pierre et Marie Curie, 4 Place Jussieu, Tour 22 75252 Paris Cedex 05, France.
Water Sci Technol. 2004;49(2):145-52.
An original technique allowed three in situ measurements to be obtained simultaneously, i.e. electrochemical and mass measurements and a microscope image of the interface between electrode and solution. The nucleation-growth process of CaCO3 deposition was investigated by varying different parameters which influenced the supersaturation coefficient, the Ca2+ concentration, pH and convection of the carbonically pure water near the substrate. The results showed that the variation of the scaling rate was due, for the two first cases, to an influence of the nucleation process whereas for the last case, the kinetics of scale deposition were modified by a shift of the growth rate.
一种原创技术能够同时进行三项原位测量，即电化学测量、质量测量以及电极与溶液界面的显微镜图像。通过改变影响过饱和系数、Ca2+浓度、pH值以及靠近基底的碳酸纯水对流的不同参数，研究了CaCO3沉积的成核生长过程。结果表明，在头两种情况下，结垢速率的变化归因于成核过程的影响，而在最后一种情况下，结垢沉积动力学因生长速率的变化而改变。
