工业废水中总磷测定方法的对比研究

Comparative Study of Methods for the Determination of Total Phosphorus in Industrial Waste Water

采用过硫酸钾氧化法和硝酸-高氯酸氧化法对标准样品和工业废水中的总磷含量进行了测定,并对测定结果和工作曲线进行了对比。结果表明:过硫酸钾氧化法操作安全简便,准确度和精密度更高;硝酸-高氯酸氧化法检测结果偏低。

K2S2O8 digestion method and HNO3-HCI04 digestion method have been used to test the content of total phosphorus in standard samples and industrial waste water. By comparing the test results and working curves,the result shows that： K2S2O8 digestion method is safety and simple,with a higher degree of accuracy. The test results of K2S2O8 digestion method are lower than the test results of HNO3-HClO4 digestion method.