便携式溶解氧仪与碘量法测定溶解氧的置信度与精密度比较

Analyse on confidence and precision of measured oxygen in water Between portable Orion Do instrument and iodometric method

对同一水样中溶解氧采用便携式溶解氧仪和碘量法进行比对实验,根据两种方法的测定结果进行DIXON检验和精密度检验,设定置信度为95%,对比结果显示,两方法测定结果之间无显著性差异,精密度符合水质监测质控要求。

Experiment on the oxygen in the same water sample separately by portable Orion Do instrument and iodometric methods and then cheek up DIXON and precision on the condition of 95% comfidence. As the contrast results shown：There are not marked difference between the results of two methods. The precision measures up to the monitor demands.