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EN ISO 15587-1:2002

Water quality - Digestion for the determination of selected elements in water - Part 1: Aqua regia digestion (ISO 15587-1:2002)

Mar 19, 2004

General information

90.93 Standard confirmed   May 21, 2008

CEN

CEN/TC 230 Water analysis

European Norm

13.060.50   Examination of water for chemical substances

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Scope

This part of ISO 15587 specifies a method for extracting trace elements from a water sample using aqua regia as a digestion agent. The method is applicable to all types of waters with a suspended solids mass concentration of less than 20 g/l and a mass concentration of total organic carbon (TOC) expressed as carbon of less than 5 g/l.
The aqua regia digestion method is empirical and it might not release elements completely. However, for most environmental applications, the result is fit for purpose.
Aqua regia digestion is suitable for the release of: Ag, Al, As, B, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, Hg, K, Mg, Mn, Mo, Na, Ni, P, Pb, Sb, Se, Sn, Sr, Tl, V, Zn. It is not suitable for the digestion of refractory compounds such as SiO 2, TiO2 and Al2O3. The presence of chloride in the digestion solution may limit the application of analytical techniques.
The method is generic and may be implemented using a wide variety of equipment provided the digestion composition is unchanged, the digestion temperature is known, and the digestion duration is in accordance with this temperature.

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PUBLISHED
EN ISO 15587-1:2002
90.93 Standard confirmed
May 21, 2008