EN ISO 12020:2000

Water quality - Determination of aluminium - Atomic absorption spectrometric methods (ISO 12020:1997)

Describes a flame atomic absorption spectrometric method and a graphite furnace atomic absorption spectrometric method for the determination of aluminium in water. The flame AAS method is applicable to mass concentrations from 5 mg/l to 100 mg/l and the graphite furnace AAS method is applicable to mass concentrations from 10  g/l to 100  g/l in water and waste water.

Wasserbeschaffenheit - Bestimmung von Aluminium - Verfahren mittels Atomabsorptionsspektrometrie (ISO 12020:1997)

Diese Internationale Norm beschreibt zwei Atomabsorptions-Verfahren (AAS) zur Bestimmung von Aluminium in Wasser. 1.1 Atomabsorption in der Flamme: Das Fammen-AAS-Verfahren (Abschnitt 2) ist anwendbar zur Bestimmung von Aluminium in Wasser in Massenkonzentrationen zwischen 5 mg/l und 100 mg/l. Nach entsprechender Verdünnung können auch höhere Konzentrationen bestimmt werden. Durch schonendes Eindampfen der mit Salpetersäure angesäuerten Wasserprobe kann der Bereich zu kleineren Massenkonzentrationen hin erweitert werden, vorausgesetzt, daß sich keine Niederschläge bilden.

Qualité de l'eau - Dosage de l'aluminium - Méthodes par spectrométrie d'absorption atomique (ISO 12020:1997)

La présente Norme internationale décrit deux méthodes par spectrométrie d'absorption atomique pour le dosage de l'aluminium dans l'eau.

Kakovost vode - Določevanje aluminija - Atomska absorpcijska spektrometrijska metoda (ISO 12020:1997)

General Information

• Status: Published
• Publication Date: 26-Jan-2000
• ICS: 13.060.01 - Water quality in general
• Technical Committee: CEN/TC 230 - Water analysis
• Drafting Committee: CEN/TC 230/WG 1 - Physical and biochemical methods
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 21-May-2008
• Completion Date: 21-May-2008
• Directive: 98/83/EC - Quality of water intended for human consumption
• Ref Project: SIST EN ISO 12020:2000 - Water quality - Determination of aluminium - Atomic absorption spectrometric methods (ISO 12020:1997)

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.WURPHWULMVNDWasserbeschaffenheit - Bestimmung von Aluminium - Verfahren mittels Atomabsorptionsspektrometrie (ISO 12020:1997)Qualité de l'eau - Dosage de l'aluminium - Méthodes par spectrométrie d'absorption atomique (ISO 12020:1997)Water quality - Determination of aluminium - Atomic absorption spectrometric methods (ISO 12020:1997)13.060.50VQRYLExamination of water for chemical substancesICS:Ta slovenski standard je istoveten z:EN ISO 12020:2000SIST EN ISO 12020:2000en01-december-2000SIST EN ISO 12020:2000SLOVENSKI
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SIST EN ISO 12020:2000



SIST EN ISO 12020:2000



SIST EN ISO 12020:2000



INTERNATIONAL STANDARD IS0 12020 First edition 1997-03-O 1 Water quality - Determination of aluminium - Atomic absorption spectrometric methods Qualit6 de I’eau - Dosage de I’aluminium - M&hodes par spectromk trie d’absorption atomique Reference number IS0 12020: 1997(E) SIST EN ISO 12020:2000



IS0 12020:1997(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 12020 was prepared by Technical Committee lSO/TC 147, Water Quality, Subcommittee SC 2, Physical, chemical and biochemical methods. Annexes A and B of this International Standard are for information only. 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 Internet central @ iso.ch x.400 c=ch; a=40Onet; p=iso; o=isocs; s=central Printed in Switzerland ii SIST EN ISO 12020:2000



0 IS0 IS0 12020: 1997(E) Introduction Aluminium may be present in water in ionic or complex form. It may be dissolved or finely dispersed. Even with the digestion described in 2.5.3, silicates and oxidic aluminium compounds may not in all cases be quantitatively covered by these methods. Clause 2 refers to the determination of aluminium by flame atomic absorption spectrometty (AAS); in clause 3 a graphite furnace AAS method is described. SIST EN ISO 12020:2000



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INTERNATIONAL STANDARD o IS0 IS0 12020:1997(E) Water quality - Determination of aluminium - Atomic absorption spectrometric methods 1 Scope This International Standard describes two atomic absorption spectrometric (AAS) methods for the determination of aluminium in water. 1.1 Flame AAS The flame AAS method (clause 2) is applicable for the determination of aluminium in water in mass concentrations from 5 mg/l to 100 mg/l. Higher concentrations may be determined after an appropriate dilution of the sample. Careful evaporation of the sample, acidified with nitric acid, may be used to extend the working range of the method to lower concentrations as long as no precipitation is observed. NOTE - If the linear range of the instrument is sufficiently large, concentrations < 5 mg/l may be determined with this method; otherwise the determination needs to be carried out in the graphite furnace, as described in clause 3. If the determination of the total content of aluminium is required, a digestion of the sample according to 2.5.3 is necessary. Silicates and aluminium oxide compounds may, however, not be quantitatively determined with this digestion procedure. 1.2 Graphite furnace The graphite furnace AAS method (clause 3) is applicable for the determination of aluminium in waters and waste waters in mass concentrations from 10 pg/l to 100 pg/l applying a dosing volume of 20 ~1. The working range can be shifted to higher concentrations either by dilution of the sample or by using a smaller sample volume. 2 Determination of aluminium by atomic absorption spectrometry in a nitrous oxide/acetylene flame 2.1 Interferences The following ions can interfere with the flame AAS method, if the concentrations listed below are exceeded: Sulfate 10 000 mg/l Chloride 10 000 mg/l Phosphate I 10 000 mg/l I Sodium I 10 000
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