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标准物质的稳定性和准确度是保证理化分析质量的前提,受到各实验室的高度重视,文献中对标准物质的管理涉及颇多[1~4]。但标准物质往往不能直接用于实验分析,需要配制成不同浓度的标准溶液才能使用。配制后的标准溶液保存期因实验室环境、溶剂、器皿洁净度、密封程度、使用频次等条件而不一致,检测标准或标准物质证书一般均未作详细规定,给理化实验室标准溶
The stability and accuracy of standard materials are the preconditions to ensure the quality of physical and chemical analysis, and are highly valued by all laboratories. The management of reference materials in the literature involves many aspects [1 ~ 4]. But the standard material often can not be directly used for experimental analysis, need to be formulated into different concentrations of standard solution to use. After the preparation of the standard solution shelf life due to laboratory environment, solvents, utensils cleanliness, the degree of sealing, the frequency of use and other inconsistencies, testing standards or standards are generally not detailed in the certificate, to Physical and Chemical Laboratory Standard