ISO 24384:2024

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 24384
ISO/TC 147/SC 2
Water quality — Determination of
Secretariat: DIN
chromium(VI) and chromium(III)
Voting begins on:
2023-12-01 in water — Method using liquid
chromatography with inductively
Voting terminates on:
2024-01-26
coupled plasma mass spectrometry
(LC-ICP-MS) after chelating
pretreatment
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 24384:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023

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ISO/FDIS 24384:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 24384
ISO/TC 147/SC 2
Water quality — Determination of
Secretariat: DIN
chromium(VI) and chromium(III)
Voting begins on:
in water — Method using liquid
chromatography with inductively
Voting terminates on:
coupled plasma mass spectrometry
(LC-ICP-MS) after chelating
pretreatment
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: +41 22 749 01 11
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: copyright@iso.org
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 24384:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 2 ----------------------
ISO/FDIS 24384:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Interferences . 2
5.1 General . 2
5.2 Samples . 2
5.3 Sample storage and sample preparation . 2
5.4 Chelating pretreatment .
...

© ISO 2023 – All rights reserved
ISO/FDIS 24384:2023(E)
Date: 2023-11-16
ISO/TC 147/SC 2/WG 82 N11
Secretariat: DIN
Water quality — Determination of chromium(VI) and
chromium(III) in water — Method using liquid chromatography
with inductively coupled plasma mass spectrometry (LC-ICP-MS)
after chelating pretreatment
First edition
Date: 2023-07-28

---------------------- Page: 1 ----------------------
ISO/FDIS 24384:2023(E)
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of
this publication may be reproduced or utilized otherwise in any form or by any means, electronic or
mechanical, including photocopying, or posting on the internet or an intranet, without prior written
permission. Permission can be requested from either ISO at the address below or ISO’s member body in the
country of the requester.
ISO Copyright Office
CP 401 • CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland.
ii © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/FDIS 24384:2023(E)
Contents Page
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Interferences . 2
5.1 General . 2
5.2 Samples . 2
5.3 Sample storage and sample preparation . 2
5.4 Chelating pretreatment . 2
5.5 LC-ICP-MS measurements . 2
6 Reagents and standards . 3
7 Apparatus . 5
8 Sampling, preservation and storage of samples . 7
9 Procedure . 7
9.1 Sample preparation . 7
9.1.1 pH-adjustment of water sample . 7
9.1.2 Chelating pretreatment . 7
9.2 Optimization of operating condition for LC-ICP-MS . 8
9.3 Identification of Cr(VI) and Cr(III) on LC-ICP-MS . 8
9.4 Blank value measurements . 8
10 Calibration . 9
10.1 General requirements .
...