在经济、科学技术与社会生活高度发展，产品与技术国际化的今天，化学计量的作用日趋重要，对分析测试结果的准确性、可比性提出了更高要求。过去，我国习惯地使用从市场上购到的“基准试剂”作化学测试基准，所得测试结果溯源于它，这不符合化学计量的要求，往往也因为“基准? With the development of economy, science and technology and social life, and the internationalization of products and technologies, the role of chemometrics is becoming more and more important. Therefore, the accuracy and comparability of analysis and test results have put forward higher requirements. In the past, our country habitually used the “benchmark reagent” purchased from the market as a benchmark for chemical testing, the resulting test results trace to it, which does not meet the requirements of stoichiometry, often because of "benchmark?