紫外法测定水中总氮准确度影响因素的探讨

通过对紫外法测定水中总氮影响准确度因素的分析得出前处理、工作曲线的绘制、样品的重复性测定及标准物质的配制是影响准确度的主要因素,可通过采取提高操作人员的业务技术水平、多次绘制工作曲线、适当增加样品重复次数等方法来提高测量准确性。

Discussion on Accuracy Influencing Factors of the Ultraviolet Determination Total Nitrogen

Total nitrogen determination in water impact on accuracy analysis affect its the main factors, including before processing, the work curve drawing, the determination of the reproducibility of the sample and the preparation of standard substances. Operating personnd can be improved by taking business technical level, repeatedly drawing work the curve, appropriate increase in the number of repetitions of samples and other methods improve the measurement accuracy.