EN ISO 11905-1:1998

Water quality - Determination of nitrogen - Part 1: Method using oxidative digestion with peroxodisulfate (ISO 11905-1:1997)

This international/European standard specifies a method for the determination of nitrogen present in water, in the form of free ammonia, ammonium, nitrite, nitrate and organic nitrogen compounds capable of conversion to nitrate under the oxidative conditions described. Dissolved nitrogen gas is not determined by this method.

Wasserbeschaffenheit - Bestimmung von Stickstoff - Teil 1: Bestimmung von Stickstoff nach oxidativem Aufschluß mit Peroxodisulfat (ISO 11905-1:1997)

Dieser Teil der ISO 11905 legt ein Verfahren zur Bestimmung von Stickstoff fest, der in Form von freiem Ammoniak, Ammonium, Nitrit, Nitrat und organischen Stickstoffverbindungen in Wässern vorkommt und unter den beschriebenen oxidativen Bedingungen in Nitrat umwandelbar ist. Gelöster gasförmiger Stickstoff wird mit diesem Verfahren nicht erfaßt. Das Verfahren ist geeignet zur Analyse von natürlichem Süßwasser, Meerwasser, Trinkwasser, Oberflächenwasser und behandeltem Abwasser einer Aufbereitungsanlage.

Qualité de l'eau - Dosage de l'azote - Partie 1: Méthode par minéralisation oxydante au peroxodisulfate (ISO 11905-1:1997)

Kakovost vode – Določevanje dušika – 1. del: Metoda z oksidativnim razklopom s peroksidisulfatom (ISO 11905-1:1997)

General Information

• Status: Published
• Publication Date: 19-May-1998
• ICS: 13.060.01 - Water quality in general
• Technical Committee: CEN/TC 230 - Water analysis
• Drafting Committee: CEN/TC 230 - Water analysis
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 21-May-2008
• Completion Date: 21-May-2008
• Ref Project: SIST EN ISO 11905-1:2000 - Water quality - Determination of nitrogen - Part 1: Method using oxidative digestion with peroxodisulfate (ISO 11905-1:1997)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 11905-1:2000
01-januar-2000
.DNRYRVWYRGH±'RORþHYDQMHGXãLND±GHO0HWRGD]RNVLGDWLYQLPUD]NORSRPV
SHURNVLGLVXOIDWRP,62
Water quality - Determination of nitrogen - Part 1: Method using oxidative digestion with
peroxodisulfate (ISO 11905-1:1997)
Wasserbeschaffenheit - Bestimmung von Stickstoff - Teil 1: Bestimmung von Stickstoff
nach oxidativem Aufschluß mit Peroxodisulfat (ISO 11905-1:1997)
Qualité de l'eau - Dosage de l'azote - Partie 1: Méthode par minéralisation oxydante au
peroxodisulfate (ISO 11905-1:1997)
Ta slovenski standard je istoveten z: EN ISO 11905-1:1998
ICS:
13.060.50 3UHLVNDYDYRGHQDNHPLþQH Examination of water for
VQRYL chemical substances
SIST EN ISO 11905-1:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 11905-1:2000

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SIST EN ISO 11905-1:2000

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SIST EN ISO 11905-1:2000

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SIST EN ISO 11905-1:2000

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SIST EN ISO 11905-1:2000

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SIST EN ISO 11905-1:2000
INTERNATIONAL
IS0
STANDARD 11905-I ’
First edition
1997-05-O 1
Water quality -
Determination of
nitrogen -
Part 1:
Method using oxidative digestion with
peroxodisulfate
Qualitb de I’eau
- Dosage de I’azote -
Partie 7: Mkthode par min&alisation oxydante au peroxodisulfate
Reference number
IS0 11905-1:1997(E)

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SIST EN ISO 11905-1:2000
IS0 11905-1:1997(E)
Contents
1 Scope .
1
2 Normative references .
1
3 Range of detection .
1
4 Sensitivity
................................................................................... 1
5 Principle .
2
6 Reagents .
2
7 Apparatus .
5
8 Sampling and samples .
5
9 Procedure
...................................................................................
5
9.1 Test portion .
5
9.2 Blank test
.............................................................................
6
9.3 Cleaning digestion vessels
................................................ 6
9.4 Digestion .
6
9.5 Verification
of recovery of organic nitrogen. . 6
9.6 Starting operation .
6
9.7 Initial sensitivity setting .
8
9.8 Calibration .
8
99 . Determination .
8
10 Expression of results . 9
10.1 .
Method of calculation 9
10.2 Precision data .
9
11 Test report .
9
0 IS0 1997
All rights reserved. Unless otherwise specified, no part of this publication may be
reproduced or utilized in any form or by any means, electronic or mechanical,
including photocopying and microfilm, without permission in writing from the
publisher.
International Organization for Standardization
Case postale 56 l CH-1211 Geneve 20 l Switzerland
[e-mail]
X.400 c=ch; a=400net; p=iso; o=isocs; s=centraI
Printed in Switzerland
ii

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SIST EN ISO 11905-1:2000
IS0 119054:1997(E)
Annexes
10
A Precision data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11
B Recovery data for some nitrogen-containing compounds . . . .
12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C Determination of nitrate
13
D Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
...