The certification of the contents (mass fractions) of calcium, chloride, magnesium, manganese, nitrate, phosphate, potassium, sodium and sulphate in artificial groundwater, CRM 616 (high carbonate content) CRM 617 (low carbonate content)

Directorate-General For Research And Innovation European Commission

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Industrial research and development

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• Sciences et techniques

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• Publié par: DIRECTORATE-GENERAL-FOR-RESEARCH-AND-INNOVATION-EUROPEAN-COMMISSION
• Nombre de lectures: 3
• Langue: English
• Poids de l'ouvrage: 1 Mo

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ISSN 1018-5593
European Commission
ber information
REFERENCE MATERIALS
THE CERTIFICATION OF THE CONTENTS
(MASS FRACTIONS)
OF CALCIUM, CHLORIDE, MAGNESIUM, MANGANESE,
NITRATE, PHOSPHATE, POTASSIUM, SODIUM
AND SULPHATE IN ARTIFICIAL GROUNDWATER
High carbonate content CRM 616
Lowet CRM 617 European Commission
ber information
REFERENCE MATERIALS
THE CERTIFICATION OF THE CONTENTS
(MASS FRACTIONS)
OF CALCIUM, CHLORIDE, MAGNESIUM, MANGANESE,
NITRATE, PHOSPHATE, POTASSIUM, SODIUM
AND SULPHATE IN ARTIFICIAL GROUNDWATER
High carbonate content CRM 616
Low e t CRM 617
Ph. QUEVAUVILLER('), M.J. BELOLIELf), R. NEVES CARNEIROf)
and L. CORTEZ(3)
(') European Commission
Standards, Measurements and Testing Programme
Rue de la Loi 200
Β-1049 Brussels
O Empresa Purtuguesa das Águas Livres
Divisão de Laboratorios
12 Rua de Alviela
PT-1170 Lisboa
( ') Instituto Português de Qualidade
Avenida dos Tres Vales
PT-2825 Monte da Caparica
Directorate-General
Science, Research and Development
1998 EUR 18286 EN EUROPEAN COMMISSION
LEGAL NOTICE
Neither the European Commission nor any person acting on
behalf of the Commission is responsible for the use which might be made of the
following information
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Cataloguing data can be found at the end of this publication.
Luxembourg: Office for Official Publications of the European Communities, 1998
ISBN 92-828-3954-0
c European Communities, 1998
Reproduction is authorised provided the source is acknowledged.
Printed in Belgium EUROPEAN COMMISSION
Edith CRESSON, Member of the Commission responsible
for Research, Innovation, Education, Training
and Youth
DG XII/C/5 - Programme SM&T ABSTRACT
This report describes the preparation of two artificial groundwater reference materials, CRM
616 (high carbonate content) and CRM 617 (low carbonate content), the homogeneity and
stability studies and the analytical work performed for the certification of a range of major
elements. The report contains all the results and gives the methods used to certify the contents
(mass fractions expressed as mg.kg"') of Ca, Cl, Fe, K, Mg, Mn, Na, NO3, PO4 and SO4.
Indicative values are given for NH« and Fe in both CRMs and PCM in CRM 617.
Please consult the instructions for use prior to opening the ampoule
containing the reference material. CONTENTS
Page
1. Introduction
2. Preliminary investigations 1
3. Participating laboratories 3
4. Preparation of the candidate reference materials 4
5. Homogeneity study 6
6. Stability study 7
7. Analytical methods 13
8. Technical and statistical discussion 31
9. Certified values8
10. Indicative values 39
11. Instructions for use 40
12. References1
Annex I - Tables of individual results and graphical representation