工业污水中总磷的快速测定法

采用COD快速测定仪建立了工业污水中总磷的分析方法。结果显示，在线性范围内，该方法线性关系较好，精密度和准确性较高，分析速率快，试剂用量低，可用于大批量水样监测。方法的检出限为0．02mg／L～40．00mg／L，样品的加标平均回收率在98．0％-108．7％，相对标准偏差（RSD）≤3％。该法适用于地表水、污水和工业废水中总磷的测定。

Determination of total phosphorus in industrial wastewater by rapid analyzer

The phosphorus is important guideline to appraise industrial wastewater.The method of total phosphorus determination was established by using COD speedy testing instrument.The results showed that this method had a better precision and accuracy,the linear is very good,analytical speed quickly and small reagent quantity.The method can to measure mass sample.By using the standard addition method,the detection limits of this method are 0.02 mg/L~40.00 mg/L,the recovery of standard addition are in the range of 98.0%~108.7%,the relative standard deviations is ≤3%.It is suitable for determination of surface water,dirt water and the total phosphorus in industrial wastewater.