评估了氧化铝颗粒在腐殖物质和钙存在下对臭氧诱导的不稳定的敏感性。据观察，钙增加了臭氧诱导的胶体失稳的易感性。颗粒失稳所需的臭氧浓度是有机碳浓度和钙浓度的函数。没有臭氧氧化的实验表明，钙浓度较高、钙浓度较低或腐殖物质浓度较高的悬浮液比钙浓度较低或腐殖物质浓度较高的悬浮液更容易凝结。 包括36个参考文献、表格、图表。

The susceptibility of alumina particles to ozone-induced destabilization in the presence of humic material and calcium was evaluated. It was observed that calcium increased susceptibility to ozone-induced colloid destabilization. The concentration of ozone required for particle destabilization is a function of the organic carbon concentration as well as the calcium concentration. Experiments without ozonation showed that suspensions with higher concentrations of calcium and lower concentrations of calcium or higher concentrations of humic material coagulate more readily than suspensions of lower concentrations of calcium or higher concentrations of humic material. Includes 36 references, table, figures.