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BSI BS EN ISO 20236:2024

Water quality. Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TN<sub>b</sub>) and dissolved bound nitrogen (DN<sub>b</sub>) after high temperature catalytic oxidative combustion
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BSI BS EN ISO 20236:2024

Water quality. Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TN<sub>b</sub>) and dissolved bound nitrogen (DN<sub>b</sub>) after high temperature catalytic oxidative combustion

PUBLISH DATE 2024
PAGES 28
BSI BS EN ISO 20236:2024
This document specifies a method to determine the 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. Cyanide, cyanate and particles of elemental carbon (soot), when present in the sample, can be determined together with the organic carbon. Dissolved nitrogen gas (N2) is not determined. 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). This document is applicable to 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. The determination of concentrations <1 mg/l is dependent on instrument conditions applying appropriate calibration. For samples containing volatile organic compounds (e.g. industrial waste water), the application of the difference method can be considered – see Annex A. The procedure is carried out by automated analysis.
SDO BSI: British Standards Institution
Document Number ISO 20236
Publication Date Nov. 29, 2024
Language en - English
Page Count 28
Revision Level
Supercedes
Committee EH/3/2
Publish Date Document Id Type View
Nov. 29, 2024 BS EN ISO 20236:2024 Revision
Oct. 11, 2018 BS ISO 20236:2018 Revision
March 31, 2022 BS EN ISO 20236:2021 Consolidated