Tagasi

EVS-EN ISO 12846:2012

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

Üldinfo
Kehtiv alates 05.06.2012
Alusdokumendid
ISO 12846:2012; EN ISO 12846:2012
Direktiivid või määrused
puuduvad
Standardi ajalugu
Staatus
Kuupäev
Tüüp
Nimetus
05.06.2012
Põhitekst
Põhitekst
Põhitekst
TThis International Standard specifies two methods for the determination of mercury in drinking, surface, ground, rain and waste water after appropriate pre-digestion. For the first method (described in Clause 6), an enrichment step by amalgamation of the Hg on, for example, a gold/platinum adsorber is used. For the method given in Clause 7, 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 (see Clause 6) 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 (see Annex A) was 0,008 μg/l. This information on the LOQ gives the user of this International Standard an orientation and does not replace the estimation of performance data based on 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 (in Clause 7) commonly has a practical working range starting at 0,05 μg/l. The LOQ reported by the participants of the validation trial (see Annex A) 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.
*
*
*
PDF
13,08 € koos KM-ga
Paber
13,08 € koos KM-ga
Hind: 2,40 € koos KM-ga
Standardi monitooring
Teised on ostnud veel
Põhitekst

EVS-EN 16192:2011

Characterization of waste - Analysis of eluates
Kehtetu alates 02.04.2020
Põhitekst

EVS-EN 15216:2007

Characterization of waste - Determination of total dissolved solids (TDS) in water and eluates
Uusim versioon Kehtiv alates 05.12.2007
Põhitekst

EVS-EN 15408:2011

Solid recovered fuels - Methods for the determination of sulphur (S), chlorine (Cl), fluorine (F) and bromine (Br) content
Uusim versioon Kehtiv alates 05.04.2011
Põhitekst

EVS-EN 15411:2011

Solid recovered fuels - Methods for the determination of the content of trace elements (As, Ba, Be, Cd, Co, Cr, Cu, Hg, Mo,Mn, Ni, Pb, Sb, Se, Tl, V and Zn)
Uusim versioon Kehtiv alates 04.10.2011