DIN EN 15915:2010-12

This standard specifies two flame atomic absorption spectrometric methods (FAAS) for the determination of the silver content of copper and copper alloys in the form of unwrought, wrought or cast products. The methods are applicable to products having silver mass fractions between 0,01 % and 2,0 %. Method A is applicable to copper and copper alloys having silver mass fractions between 0,01 % and 1,0 % and containing antimony or tin not greater than 0,005 % or silicon not greater than 0,010 %. Method B is applicable to copper and copper alloys having silver mass fractions between 0,01 % and 2,0 % and antimony or tin greater than 0,005 % and silicon greater than 0,010 %. Amongst other things, the standard contains the description of the method: - dissolution of the test portion in a suitable acid solution - after appropriate dilution, nebulization into an air/acetylene flame of an atomic absorption spectrometer. - Measurement of the absorption of the 328,1 nm line emitted by a silver hollow-cathode or electrodeless discharge lamp. This standard has been prepared by CEN/TC 133 "Copper and copper alloys", the secretariat of which is held by DIN (Germany). Regarding the German collaboration the responsible Working Committee is NA 066-02-06 AA "Analysenverfahren für NE-Metalle" ("Methods of analysis for non-ferrous metals") of the Non-ferrous Metals Standards Committee (FNNE).