卤水中钙镁含量的连续测定

Continuous Determination on Calcium and Magnesium Contents in Brine

[目的]探讨卤水中钙镁含量的连续测定方法.[方法]测定卤水中钙镁含量时,首先将pH控制在12～13的条件下测出钙离子的含量,再改变pH到10,测定镁离子含量.[结果]该方法在确保精密度、准确度等条件的同时,节省了大量时间,节约了成本,使得连续测定卤水中钙镁含量变得简便易行.[结论]该连续测定方法节省了分析时间,简化了操作程序,其精密度和准确度与常规方法基本一致.

[Objective]The aim was to explore the continuous determination method of calcium and magnesium con- tents in brine. [Method] The calcium ion content was determined under the condi- tion of pH 12-13 at the first. Then the magnesium ion content was determined under the condition of pH 10. [Result] This method ensured precision, accuracy and other conditions, at the same time, saved a lot of time and cost. It made the continuous determination of calcium and magnesium contents of brine became simple. [Conclusion] The continuous de- termination method of calcium and mag- nesium contents in brine saved analysis time ,and simplified procedures. Its pre- cision and accuracy was consistent with the conventional method.