prEN ISO 20236
水质 高温催化氧化燃烧后总有机碳（TOC）、溶解有机碳（DOC）、总结合氮（TNb）和溶解结合氮（DNb）的测定（ISO/DIS 20236:2023）

Water quality - Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) after high temperature catalytic oxidative combustion (ISO/DIS 20236:2023)

prEN ISO 20236 发布历史

prEN ISO 20236由欧洲标准化委员会 IX-CEN 发布于 。

prEN ISO 20236在国际标准分类中归属于: 13.060.50 水的化学物质检验。

prEN ISO 20236 水质 高温催化氧化燃烧后总有机碳（TOC）、溶解有机碳（DOC）、总结合氮（TNb）和溶解结合氮（DNb）的测定（ISO/DIS 20236:2023）的最新版本是哪一版？

prEN ISO 20236已经是当前最新版本。

prEN ISO 20236的历代版本如下：

• 2021年 EN ISO 20236:2021 水质.高温催化氧化燃烧后总有机碳（TOC）、溶解有机碳（DOC）、总结合氮（TNb）和溶解结合氮（DNb）的测定

This document specifies a method for the determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TNb) and dissolved bound nitrogen (DNb) in the form of free ammonia, ammonium, nitrite, nitrate and organic compounds capable of conversion to nitrogen oxides under the conditions described. The procedure is carried out instrumentally. NOTE Generally the method can be applied for the determination of total carbon (TC) and total inorganic carbon (TIC), see Annex A. The method is applicable to water samples (e.g. drinking water, raw water, ground water, surface water, sea water, waste water, leachates). The method allows a determination of TOC and DOC ≥ 1 mg/l and TNb and DNb ≥ 1 mg/l. The upper working range is restricted by instrument-dependent conditions (e.g. injection volume). Higher concentrations can be determined after appropriate dilution of the sample. For samples containing volatile organic compounds (e.g. industrial waste water), the difference method is used, see Annex A. Cyanide, cyanate and particles of elemental carbon (soot), when present in the sample, can be determined together with the organic carbon. The method is not appropriate for the determination of volatile, or purgeable, organic carbon under the conditions described by this method. Dissolved nitrogen gas (N2) is not determined.

标准号

prEN ISO 20236

发布单位

欧洲标准化委员会

 

 

被代替标准

EN ISO 20236:2021

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