无机标准溶液的稳定性

摘要

It was explored about the factors affecting the stability of standard solution by the packaging, the concentration of the solution, medium acidity, storage transportation, etc. By adding Al-bag packaging, improving the concentration of solution and concentration of the solution medium, the retention time of standard solution can be extended. Meanwhile, the statistical methods were discussed for stability of the standard solution:trend analysis method, variance components method and consistency test method.%讨论了影响无机标准溶液稳定性的因素。分别分析了标准溶液的包装、溶液的浓度、介质酸度、储存运输条件对无机标准溶液稳定性的影响，通过增加铝塑包装、提高溶液浓度及介质浓度可以有效延长标准溶液的保存时间。同时介绍了稳定性测量数据判定的3种统计学方法：趋势分析法、方差分析法和一致性检验法。