UNE-EN ISO 20236:2025
Current
The latest, up-to-date edition.
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 20236:2024)
Hardcopy , PDF
Spanish, Castilian, English
21-05-2025
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 by automated analysis.
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 e" 1 mg/l and TNb and DNb e" 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
| Committee |
CTN 77/SC 1
|
| DocumentType |
Standard
|
| Pages |
31
|
| PublisherName |
Asociación Española de Normalización
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| ISO 20236:2024 | Identical |
| EN ISO 20236:2024 | Identical |
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