ISO 21793:2020 水质 湿化学催化臭氧羟基自由基氧化（COHR）后总有机碳（TOC）、溶解有机碳（DOC）、总结合氮（TN<sub>b</sub>）、溶解结合氮（DN<sub>b</sub>）、总结合磷（TP<sub>b</sub>）和溶解结合磷（DP<sub>b</sub>）的测定
标准编号：ISO 21793:2020
中文名称：水质 湿化学催化臭氧羟基自由基氧化（COHR）后总有机碳（TOC）、溶解有机碳（DOC）、总结合氮（TNb）、溶解结合氮（DNb）、总结合磷（TPb）和溶解结合磷（DPb）的测定
英文名称：Water quality — Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb), dissolved bound nitrogen (DNb), total bound phosphorus (TPb) and dissolved boun
发布日期：2020-09
标准范围
本文档指定了一个多？参数法测定饮用水、原水、地下水、地表水、海水、盐水、工艺用水、生活和工业废水中的总有机碳（TOC）、总氮（TNb）和总磷（TP），经过化学氧化过程。它适用于溶解和结合的悬浮物质。该方法允许测定TOC、TN和TP。这些参数的下工作范围和上工作范围取决于仪器条件(例如样品体积、反应化学量)，并且可以调整到更宽的范围。典型测量范围如图C.1至C.3所示。分析程序通过单一氧化过程在仪器上进行。在该方法中，溶解的氮气不包括在TNb测量中。当存在于样品中时，元素碳、氰酸盐和硫氰酸盐将包括在TOC结果中。
This document specifies a multi？parameter method for the determination of total organic carbon (TOC), total nitrogen (TNb) and total phosphorus (TP) in drinking water, raw water, ground water, surface water, sea water, saline water, process water, domestic and industrial wastewater, after a chemical oxidation process. It is applicable to both dissolved and bound suspended materials.The method allows for determination of TOC, TN and TP. The lower and upper working ranges for these parameters are dependent upon instrument conditions (for example sample volume, reaction chemistry amounts) and can be adjusted for a wider range. Typical measurement ranges are shown in Figures C.1 to C.3.The analysis procedure is carried out instrumentally by a single oxidation process.Dissolved nitrogen gas is not included in the TNb measurement in this method. When present in the sample, elemental carbon, cyanate and thiocyanate will be included in the TOC result.
标准预览图
