结合操作实际谈高锰酸盐指数测定的几点问题

The Study of Some Problems about Determination of Permanganate Index Combined with the Operation Practice

高锰酸盐指数是反映水体中有机及无机可氧化物质物质量的常用指标,其测定方法较为简便易行,但也有不少需要注意的难点。文章简述了高锰酸盐指数测定过程中关于试剂、仪器以及质量控制等方面需要注意的问题,对国家标准中测定高锰酸盐指数方法进行了改进。经过验证,相比于国标,运用改进后的方法能够取得更加精准的测定结果。

Permanganate index is the usual index that reflects the quantity of organic matter and oxidable inorganic matter in the water.The determination method is easy and facility,but also need to pay attention to some difficult points.The paper introduced the problems about instruments,reagents and the quality controlling,and improved the determination of permanganate index which in the national standard analytical method.By contrast with the national standard,it was concerned that the improved analytical method may acquire the more accurate result.