EN ISO 12846:2012

Water quality - Determination of mercury - Method using atomic absorption spectrometry (AAS) with and without enrichment (ISO 12846:2012)

ISO 12846:2012 specifies two methods for the determination of mercury in drinking, surface, ground, rain and waste water after appropriate pre-digestion. For the first method, an enrichment step by amalgamation of the Hg on, for example, a gold/platinum adsorber is used. For the second method, the enrichment step is omitted.
The choice of method depends on the equipment available, the matrix and the concentration range of interest. Both methods are suitable for the determination of mercury in water. The method with enrichment commonly has a practical working range from 0,01 µg/l to 1 µg/l. The mean limit of quantification (LOQ) reported by the participants of the validation trial was 0,008 µg/l. This information on the LOQ gives the user of ISO 12846:2012 an orientation and does not replace the estimation of performance data from laboratory specific data. It has to be considered that it is possible to achieve lower LOQs with specific instrumentation (e.g. single mercury analysers).
The method without enrichment commonly has a practical working range starting at 0,05 µg/l. The LOQ reported by the participants of the validation trial was 0,024 µg/l. It is up to the user, based on the specific application, to decide whether higher concentrations are 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.
Another possibility for the determination of extremely low Hg concentrations down to 0,002 µg/l without pre-concentration is the application of atomic fluorescence spectrometry (see ISO 17852). Specific atomic-absorption mercury analysers allow determinations down to 0,010 µg/l without pre-concentration.
In general, the determination of trace concentrations of Hg by AAS (or AFS) is dependent on clean operating conditions in the laboratory and on the use of high-purity chemicals with negligible low-Hg blanks.
Note that ISO 12846:2012 may be applied to industrial and municipal waste water after an additional digestion step performed under appropriate conditions and after suitable method validation. A potential sample stability issue (mercury loss) for anaerobic reducing industrial effluents has to be considered thoroughly.

Wasserbeschaffenheit - Bestimmung von Quecksilber - Verfahren mittels Atomabsorptionsspektrometrie (AAS) mit und ohne Anreicherung (ISO 12846:2012)

Diese internationale Norm legt zwei Verfahren zur Bestimmung von Quecksilber in Trink-, Oberflächen-, Grund-, Regen- und Abwasser nach einem geeigneten Vor-Aufschluss fest. Im ersten Verfahren, beschrieben in Abschnitt 6, wird ein Anreicherungsschritt durch Amalgamieren des Quecksilbers z. B. auf Gold- oder Platin-Adsorbentien genutzt. Bei dem in Abschnitt 7 beschriebenen Verfahren wird auf den Anreicherungsschritt verzichtet.  Die Wahl des Verfahrens ist abhängig von der zur Verfügung stehenden Ausrüstung, der Matrix und dem Konzentrationsbereich. Beide Verfahren sind geeignet zur Bestimmung von Quecksilber in Wasser. Das Verfahren mit Anreichungsschritt (siehe Abschnitt 6) ist üblicherweise in einem Bereich von 0,03 µg/l bis 1 µg/l anwendbar. Die mittlere Bestimmungsgrenze (BG), ermittelt durch die Teilnehmer des Validierungsringversuchs (siehe Anhang A), lag bei 0,017 µg/l. Dies kann als Anhaltspunkt genutzt werden.  Der Arbeitsbereich für das Verfahren ohne Anreichungsschritt (siehe Abschnitt 7) beginnt üblicherweise bei 0,05 µg/l. Die durch die Teilnehmer des Validierungsringversuchs (siehe Anhang A) ermittelte mittlere Bestimmungsgrenze lag bei 0,024 µg/l. Es ist dem Anwender überlassen, zu entscheiden, ob höhere Konzentrationen durch Weglassen des Anreicherungsschritts oder durch Verdünnung der Proben in dem jeweiligen Verfahren bestimmt werden. Die Empfindlichkeit beider Verfahren ist abhängig von den gewählten Betriebsbedingungen. Eine andere Möglichkeit zur Bestimmung von extrem niedrigen Quecksilberkonzentrationen bis zu 0,002 µg/l ohne eine Anreicherung ist die Anwendung der Atomfluoreszenzspektroskopie (siehe ISO 17852). Bestimmte Atomabsorptions-Quecksilber-Analysatoren erlauben Bestimmungen bis zu einer Konzentration von 0,010 µg/l ohne vorhergehende Anreicherung.

Qualité de l'eau - Dosage du mercure - Méthode par spectrométrie d'absorption atomique (SAA) avec et sans enrichissement (ISO 12846:2012)

Kakovost vode - Določevanje živega srebra - Metoda atomske absorpcijske spektrometrije (AAS) s predkoncentracijo ali brez nje (ISO 12846:2012)

Ta mednarodni standard določa dve metodi za določevanje živega srebra v pitni, površinski, deževni in odpadni vodi po ustreznem predhodnem razklopu. Prva metoda (opisana v točki 6) vključuje fazo predkoncentracije, in sicer amalgamiranje Hg na primer zlat/platinast adsorber. Pri metodi, navedeni v točki 7, faze predkoncentracije ni. Izbira metode je odvisna od opreme, ki je na voljo, matrice in aktualnega območja koncentracije. Obe metodi sta primerni za določevanje živega srebra v vodi. Praktični delovni razpon metode s predkoncentracijo (glejte točko 6) je navadno od 0,01 μg/l do 1 μg/l. Povprečna poročana meja kvantifikacije (LOQ) pri validacijskem poskusu (glejte Dodatek A) je bila 0,008 μg/l. Te informacije o meji kvantifikacije so smernice za uporabnika tega mednarodnega standarda in ne nadomeščajo ocene podatkov o delovanju na podlagi laboratorijskih podatkov. Upoštevati je treba, da je nižje meje kvantifikacije mogoče doseči z nekaterimi instrumenti (npr. analizatorji živega srebra). Praktični delovni razpon metode brez predkoncentracije (glejte točko 7) se pogosto začne pri 0,05 μg/l. Poročana meja kvantifikacije pri validacijskem poskusu (glejte Dodatek A) je bila 0,024 μg/l. Uporabnik se mora na podlagi specifične uporabe odločiti, ali se bodo višje koncentracije določale brez faze predkoncentracije in/ali z redčenjem vzorcev. Občutljivost obeh metod je odvisna od izbranih delovnih razmer. Še ena možnost za določevanje izredno nizkih koncentracij Hg do 0,002 μg/l brez predkoncentracije je atomska fluorescenčna spektrometrija (glejte standard ISO 17852) Specifični atomski absorpcijski analizatorji živega srebra omogočajo določevanje brez predkoncentracije do 0,010 μg/l. Na splošno je določevanje koncentracij Hg v sledovih z atomsko absorpcijsko spektrometrijo (AAS) (ali atomsko fluorescenčno spektrometrijo (AFS) odvisno od čistih delovnih razmer v laboratoriju in uporabe zelo čistih kemikalij z zanemarljivimi surovci z majhnimi količinami Hg.

General Information

• Status: Published
• Publication Date: 14-Apr-2012
• Withdrawal Date: 30-Oct-2012
• ICS: 13.060.50 - Examination of water for chemical substances
• ICS: 75.140 - Waxes, bituminous materials and other petroleum products
• ICS: 91.100.50 - Binders. Sealing materials
• Technical Committee: CEN/TC 230 - Water analysis
• Drafting Committee: CEN/TC 230 - Water analysis
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 15-Apr-2012
• Completion Date: 15-Apr-2012
• Ref Project: SIST EN ISO 12846:2012 - Water quality - Determination of mercury - Method using atomic absorption spectrometry (AAS) with and without enrichment (ISO 12846:2012)

Relations

• Replaces: EN 12338:1998 - Water quality - Determination of mercury - Enrichment methods by amalgamation
• Effective Date: 23-Jan-2013
• Replaces: EN 1483:2007 - Water quality - Determination of mercury - Method using atomic absorption spectrometry
• Effective Date: 23-Jan-2013

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 12846:2012
01-junij-2012
1DGRPHãþD
SIST ISO 5666:2000
.DNRYRVWYRGH'RORþHYDQMHåLYHJDVUHEUD0HWRGDDWRPVNHDEVRUSFLMVNH
VSHNWURPHWULMH$$6VSUHGNRQFHQWUDFLMRDOLEUH]QMH,62
Water quality - Determination of mercury - Method using atomic absorption spectrometry
(AAS) with and without enrichment (ISO 12846:2012)
Wasserbeschaffenheit - Bestimmung von Quecksilber - Verfahren mittels
Atomabsorptionsspektrometrie (AAS) mit und ohne Anreicherung (ISO 12846:2012)
Qualité de l'eau - Dosage de mercure - Méthode par spectrométrie d'absorption
atomique (SAA) avec et sans enrichissement (ISO 12846:2012)
Ta slovenski standard je istoveten z: EN ISO 12846:2012
ICS:
13.060.50 3UHLVNDYDYRGHQDNHPLþQH Examination of water for
VQRYL chemical substances
SIST EN ISO 12846:2012 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 12846:2012

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SIST EN ISO 12846:2012


EUROPEAN STANDARD
EN ISO 12846

NORME EUROPÉENNE

EUROPÄISCHE NORM
April 2012
ICS 13.060.50
English Version
Water quality - Determination of mercury - Method using atomic
absorption spectrometry (AAS) with and without enrichment
(ISO 12846:2012)
Qualité de l'eau - Dosage du mercure - Méthode par Wasserbeschaffenheit - Bestimmung von Quecksilber -
spectrométrie d'absorption atomique (SAA) avec et sans Verfahren mittels Atomabsorptionsspektrometrie (AAS) mit
enrichissement (ISO 12846:2012) und ohne Anreicherung (ISO 12846:2012)
This European Standard was approved by CEN on 14 April 2012.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12846:2012: E
worldwide for CEN national Members.

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SIST EN ISO 12846:2012
EN ISO 12846:2012 (E)
Contents Page
Foreword .3
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SIST EN ISO 12846:2012
EN ISO 12846:2012 (E)
Foreword
This document (EN ISO 12846:2012) has been prepared by Technical Committee ISO/TC 147 “Water quality”
in collaboration with Technical Committee CEN/TC 230 “Water analysis” the secretariat of which is held by
DIN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by October 2012, and conflicting national standards shall be withdrawn at
the latest by October 2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 12846:2012 has been approved by CEN as a EN ISO 12846:2012 without any modification.
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SIST EN ISO 12846:2012

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SIST EN ISO 12846:2012
INTERNATIONAL ISO
STANDARD 12846
First edi
...