EN ISO 10304-3:1997
(Main)Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 3: Determination of chromate, iodide, sulfite, thiocyanate and thiosulfate (ISO 10304-3:1997)
Water quality - Determination of dissolved anions by liquid chromatography of ions - Part 3: Determination of chromate, iodide, sulfite, thiocyanate and thiosulfate (ISO 10304-3:1997)
The method is intended for monitoring waste water and the respective concentration of the anions mentioned in the title.
Wasserbeschaffenheit - Bestimmung der gelösten Anionen mittels Ionenchromatographie - Teil 3: Bestimmung von Chromat, Iodid, Sulfit, Thiocyanat und Thiosulfat (ISO 10304-3:1997)
Qualité de l'eau - Dosage des anions dissous par chromatographie des ions en phase liquide - Partie 3: Dosage des ions chromate, iodure, sulfite, thiocyanate et thiosulfate (ISO 10304-3:1997)
La présente partie de l'ISO 10304 spécifie des méthodes pour le dosage des anions dissous: -- iodure, thiocyanate et thiosulfate (article 4); -- sulfite (article 5); -- chromate (article 6). Un prétraitement approprié de l'échantillon (par exemple dilution) et l'emploi d'un détecteur conductimétrique (CD), d'un détecteur UV (UV) ou d'un détecteur ampérométrique (AD) rendent possible le dosage dans les domaines de travail donnés dans le tableau 1.
Kakovost vode - Določevanje raztopljenih anionov z ionsko kromatografijo - 3. del: Določevanje kromata, jodida, sulfita, tiocianita in tiosulfata (ISO 10304-3:1997)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-1998
.DNRYRVWYRGH'RORþHYDQMHUD]WRSOMHQLKDQLRQRY]LRQVNRNURPDWRJUDILMRGHO
'RORþHYDQMHNURPDWDMRGLGDVXOILWDWLRFLDQLWDLQWLRVXOIDWD ,62
Water quality - Determination of dissolved anions by liquid chromatography of ions - Part
3: Determination of chromate, iodide, sulfite, thiocyanate and thiosulfate (ISO 10304-
3:1997)
Wasserbeschaffenheit - Bestimmung der gelösten Anionen mittels
Ionenchromatographie - Teil 3: Bestimmung von Chromat, Iodid, Sulfit, Thiocyanat und
Thiosulfat (ISO 10304-3:1997)
Qualité de l'eau - Dosage des anions dissous par chromatographie des ions en phase
liquide - Partie 3: Dosage des ions chromate, iodure, sulfite, thiocyanate et thiosulfate
(ISO 10304-3:1997)
Ta slovenski standard je istoveten z: EN ISO 10304-3:1997
ICS:
13.060.50 3UHLVNDYDYRGHQDNHPLþQH Examination of water for
VQRYL chemical substances
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
INTERNATIONAL IS0
STANDARD 10304-3
First edition
1997-08- 15
Water quality -
Determination of dissolved
anions by liquid chromatography of ions -
Part 3:
Determination of chromate, iodide, sulfite,
thiocyanate and thiosulfate
Qua/it6 de I’eau - Dosage des anions dissous par chromatographie des ions
en phase liquide -
Parfie 3: Dosage des ions chromate, iodure, sulfite, thiocyanate et thiosulfate
Reference number
IS0 10304-3: 1997(E)
IS0 10304=3:1997(E)
Contents
1 Scope *.*.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Normative references
3 Principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4 Determination of iodide, thiocyanate and thiosulfate
4.1 Reagents .
...............................................................................................................................................................................
4.2 Apparatus
..........................................................................................................................................................................
4.3 Interferences
................................................................................................................................... 9
4.4 Sampling and sample pretreatment
4.5 Procedure .
II
4.6 Calculation .
4.7 Expression of results .
4.8 Test report .
..............................................................................................................
5 Determination of sulfite
5.1 Reagents .
5.2 Apparatus .
5.3 Interferences .
5.4 Sampling and sample pretreatment .
5.5 Procedure .
.............................................................................................................................................................................
5.6 Calculation
............................................................................................................................................................
5.7 Expression of results
.............................................................................................................................................................................. 16
5.8 Test report
........................................................................................................ 16
6 Determination of chromate
6.1 Reagents .
6.2 Apparatus . 18
.......................................................................................................................................................................... 18
6.3 Interferences
................................................................................................................................... 18
6.4 Sampling and sample pretreatment
6.5 Procedure .
6.6 Calculation .
6.7 Expression of results .
6.8 Test report .
7 Precision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .~. 19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*. 20
Annex A (informative) Interlaboratory trials
Annex B (informative) Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*. 22
0 IS0 1997
Unless otherwise specified, no part of this publication may be
All rights reserved.
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
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Internet central @ iso.ch
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Printed in Switzerland
ii
0 IS0
IS0 10304=3:1997(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0
member bodies). The work of preparing International Standards is normally carried out through IS0 technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
International Standard IS0 10304-3 was prepared by Technical Committee ISOITC 147, Water qualify, SC 2,
Physical, chemical and biochemical methods.
IS0 10304 consists of the following parts, under the general title Water quality - Determination of dissolved anions
by liquid chromatography of ions:
- Part I: Determination of fluoride, chloride, bromide, nitrate, nitrite, orfhophosphate and sulfate in water with
low contamination
- Part 2: Determination of bromide, chloride, nitrate, nitrite, orfhophosphate and sulfate in waste water
Par? 3: Determination of chromate, iodide, sulfite, thiocyana te and thiosulfa te
Part 4: Determination of chlorate, chloride and chlorite in water with low contamination
Annexes A and B of this part of IS0 10304 are for information only.
IS0 10304=3:1997(E) @ IS0
Introduction
The essential minimum requirements of an ion chromatographic system applied within the scope of this part of IS0 10304 are the
following:
a) Resolution of the column: For the anion to be determined it is essential that the
peak resolution does not fall below R= I,3 (4.2.2,
figure 3)
b) Method of detection: measurement of the electrical conductivity with or
1)
wi thout suppressor device
2) spectrometric measurement (UVnllS), directly or
indirectly
3) amperometric direct detection
c) Applicability of the method:
Working ranges according to table 1
d) Calibration (4.51): Calibration and determination of the linear working range
(see IS0 8466-l)
Guaranteeing the analytical quality: Validity check of the calibration function. Replicate
determinations if necessary.
The diversity of the appropriate and suitable assemblies procedural steps depending on them permit a description
only.
For further information on the analytical technique, see reference [I].
INTERNATIONAL STANDARD @ IS0 IS0 10304-3: 1997(E)
Water quality - Determination of dissolved anions by liquid chromatography of ions -
Part 3: Determination of chromate, iodide, sulfite, thiocyanate and thiosulfate
1 Scope
This part of IS0 10304 specifies methods for the determination in aqueous solution of the dissolved anions
- iodide, thiocyanate and thiosulfate (clause 4);
- sulfite (clause 5);
- chromate (clause 6).
An appropriate pretreatment of the sample (e.g. dilution) and the application of a conductivity detector (CD), UV detector
(UV) or amperometric detector (AD) make the working ranges given in table 1 feasible.
Table 1 - Applicable working ranges
Working range ‘) Detector
Anion
0,05 mg/l to 50 mg/l
Chromate (CrO,), clause 6 UV (h = 365 nm)
Iodide (I), clause 4 0,l mg/l to 50 mg/l CD or UV (h = 205 nm to 236 nm)
AD (approximately 0,7 V to I,1 V)
Sulfite (SO,), clause 5 0,l mg/l to 50 mg/l CD
0,5 mg/l to 50 mg/l UV (h = 205 nm to 220 nm)
Thiocyanate (SCN), clause 4 0,l mg/l to 50 mg/l
CD or UV (h = 205 nm to 220 nm)
AD (approximately 0,7 V to I,1 V)
Thiosulfate (S,O,), clause 4 0,l mg/l to 50 mg/l CD or UV (h = 205 nm to 220 nm)
AD (approximately 0,7 V to I,1 V)
‘) The working range is restricted by the exchange capacity of the columns. Dilute the sample into the working range if
necessary.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this part of IS0
10304. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to
agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent
editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International
Standards.
IS0 5667- 1: 1980 Water quality - Sampling - Part I: Guidance on the design of sampling
programmes.
IS0 5667-2:1991 Water quality - Sampling - Part 2: Guidance on sampling techniques.
IS0 5667-3: 1994 Water quality - Sampling - Part 3: Guidance on the preservation and handling of
samples.
IS0 8466-I:1990
Water quality - Calibration and evaluation of analytical methods and estimation of
performance characteristics -Part 7: Statistical evaluation of the linear calibration
function.
IS0 10304-I:1992
Water quality - Determination of dissolved fluoride, chloride, nitrite,
orthophosphate, bromide, nitrate, and sulfate ions, using liquid chromatography
of ions - Part 7: Method for water with low contamination.
IS0 10304-2: 1995 Water quality - Determination of dissolved anions by liquid chromatography of
ions - Part 2: Determination of bromide, chloride, nitrate, nitrite, orthophosphate
and sulfate in waste water.
IS0 10304-3: 1997(E) 0 I
...
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