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盐湖天然卤水中钠的测定,通常采用醋酸铀酰锌钠重量法。因试剂昂贵,操作烦琐,故该方法一般多用于对照分析。此外,也用差减法计算钠的浓度,但准确度较差。 Everson在用记录式温度滴定法测定Al~(3+)时,以KF溶液滴定NaCI-NaAc溶液中的Al~(3+)。该反应是放热反应,升温类型的滴定曲线呈现清晰的终点。本工作同样采用KF溶液作滴定剂,在Al~(3+)存在下的酸性介质中滴定Na~+。沉淀物的组成接近K_2NaAlF_6。滴定采用
Determination of sodium in brine natural brine, sodium uranyl acetate usually by weight sodium. Due to expensive reagents, cumbersome operation, so the method is generally used for comparative analysis. In addition, the sodium concentration is also calculated using the subtraction method, but the accuracy is poor. Everson titration of Al ~ (3+) in NaCI-NaAc solution with KF solution in the determination of Al ~ (3+) by the recorded temperature titration. The reaction is an exothermic reaction and the titration curve of the warming type shows a clear end point. This work also uses KF solution as titrant to titrate Na ~ + in acid medium in the presence of Al ~ (3+). The composition of the precipitate is close to K_2NaAlF_6. Titration used