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Normas DIN – AENOR
DIN EN ISO 12846:2010-11

DIN EN ISO 12846:2010-11

Water quality - Determination of mercury - Method using atomic absorption spectrometry (AAS) with and without enrichment (ISO/DIS 12846:2010); German version prEN ISO 12846:2010 / Note: Date of issue 2010-12-06

Qualité de l'eau - Dosage du mercure - Méthode par spectrométrie d'absorption atomique (SAA) avec et sans enrichissement (ISO/DIS 12846:2010); Version allemande prEN ISO 12846:2010 / Attention: Date de parution 2010-12-06

Wasserbeschaffenheit - Bestimmung von Quecksilber - Verfahren mittels Atomabsorptionsspektrometrie (AAS) mit und ohne Anreicherung (ISO/DIS 12846:2010); Deutsche Fassung prEN ISO 12846:2010 / Achtung: Erscheinungsdatum 2010-12-06

Fecha Anulación:
2012-08 /Withdrawn
Equivalencias internacionales:

ISO/DIS 12846 (2010-11)

prEN ISO 12846 (2010-11)

Relación con otras normas DIN:

Reemplazada por: DIN EN ISO 12846:2012-08

Resumen:
This International Standard specifies two methods for the determination of mercury in different types of water (including waste water after appropriate pre-digestion). For the first method described in Clause 6, an enrichment step by amalgamation of the Hg on e. g. a gold/platinum absorber is used. For the method given in Clause 7, the enrichment step is omitted.The method with enrichment has usually a concentration range from 0,002 µg/l to 1 µg/l and the method without enrichment starts at 0,1 µg/l as the lower limit of the working range. It is up to the user to decide whether higher concentrations should be determined by omitting the enrichment step and/or by diluting the sample(s). The sensitivity of both methods is dependent on the selected operating conditions. In general the determination of trace concentrations of Hg by AAS is highly depending on clean operating conditions in the lab and on high purity chemicals with negligible low Hg blanks.
Keywords:
AAS, Atomic absorption spectrophotometry, Chemical reactions, Chemicals, Concentration, Determination, Determination of content, Drinking water, Ground water, Health protection, Mass concentration, Mercury, Mercury compounds, Rainwater, Sampling methods, Sewage, Surface water, Test procedures, Testing, Water, Water analysis, Water practice, Water quality, Water samples, Water testing, Waters
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