1　前言目前 ,由于科学技术的高速发展 ,促使化学领域的分析手段必须不断更新 ,新的大型分析仪器陆续出现 ,但因其价格昂贵、测定方法局限性等因素 ,多数企业仍采用化学分析手段对产品进行测定 ,尤其是对高含量的无机化工产品及原料 ,化学分析比仪器分析准确度高 ,成本低 ,简便 1 Introduction At present, due to the rapid development of science and technology, the analytical methods in the field of chemistry must be continuously updated and new large-scale analytical instruments are gradually emerging. However, most enterprises still adopt the methods of chemical analysis because of their expensiveness and limitation of measurement methods Product determination, especially for high levels of inorganic chemical products and raw materials, chemical analysis than the high accuracy of the instrument analysis, low cost, simple