Standard NBN EN ISO 20236:2021

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 20236:2018)
Status
:
Active
Publication date
:
11/2021
Languages
:
EN/FR
ICS
:
13.060.50 Examination of water for chemical substances
Summary :
This document specifies a method for the determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TN
b) and dissolved bound nitrogen (DN
b) 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, leachate
s). 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 volum
e). Higher concentrations can be determined after appropriate dilution of the sample. For samples containing volatile organic compounds (e.g. industrial waste wate
r), the difference method is used, see Annex A. Cyanide, cyanate and particles of elemental carbon (soo
t), 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.
Preview
Add to cart
EUR 60.00 (excl. VAT)
Select your language
Viewer title
...
The NBN uses cookies to improve your user experience. By continuing to use this site you agree to our use of cookies as described in the NBN privacy statement.
Decline