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通过浊度法测定10℃～45℃范围内MgSO4-H3BO3-H2O体系中硼酸的溶解度及介稳区宽度,得到硼酸的成核方程,并计算其表观成核级数。实验结果表明,硫酸镁的存在降低了硼酸的溶解度;随着硫酸镁浓度的升高,硼酸的介稳区宽度先变宽后变窄;硫酸镁的加入使硼酸的表观成核级数增加。
The solubility and metastable region width of boric acid in MgSO4-H3BO3-H2O system at 10 ℃ ~ 45 ℃ were determined by turbidity method. The nucleation equation of boric acid was obtained and the apparent nucleation series were calculated. The experimental results show that the presence of magnesium sulphate decreases the solubility of boric acid. As the concentration of magnesium sulphate increases, the metastable zone width of boric acid broadens first and then becomes narrower. The addition of magnesium sulphate increases the apparent nucleation series of boric acid .