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  • BSI
    19/30349828 DC BS ISO 21793. 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 bound phosphorus (DPb) after wet chemical catalysed ozone hydroxyl radical oxidation
    Edition: 2019
    $44.66
    / user per year

Description of 19/30349828 DC 2019

This document specifies a multi‑parameter method for the determination of total organic carbon (TOC), total nitrogen (TN) and total phosphorus (TP) in drinking water, raw water, ground water, surface water, sea water, saline water, process water, wastewater and industrial wastewater applications, after a chemical oxidation process. It is applicable to both dissolved and bound to suspended materials.

The method allows for determination of TOC ≥ 1 mg/l, TN ≥ 1 mg/l and TP ≥ 1 mg/l. The lower and upper working ranges are restricted by instrument‑dependent conditions (for example sample volume, reaction chemistry amounts) and can be adjusted for a wider range.

The analysis procedure is carried out instrumentally by a single oxidation process under standard temperature and pressure.

Dissolved nitrogen gas is not included in the TN measurement in this method. Depending on the analysis conditions and when present in the sample, certain portion of elemental carbon, cyanide and cyanate can be included in the TOC result.

NOTE

The method can be applied for the determination of total carbon (TC) and total inorganic carbon (TIC). Volatile or purgeable organic carbon (VOC, POC) can be determined separately by this method (see Annex A).



Standard Number19/30349828 DC
TitleBS ISO 21793. 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 bound phosphorus (DPb) after wet chemical catalysed ozone hydroxyl radical oxidation
StatusDefinitive
Publication Date2019-06-03
Identical National Standard OfISO/DIS 21793
DescriptorsWater, Quality, Carbon, Nitrogen, Phosphorus
ICS13.060.50 Examination of water for chemical substances
CommitteeEH/3/2
PublisherBSI
Pages29

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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