BS EN ISO 15587-2:2002
Current
The latest, up-to-date edition.
Water quality. Digestion for the determination of selected elements in water Nitric acid digestion
Hardcopy , PDF
English
24-05-2002
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Foreword
1 Scope
2 Normative references
3 Term and definition
4 Principle
5 Reagents
6 Apparatus
7 Sampling
8 Procedure
9 Test report
Annex A (informative) Digestion is an open system using electrical
heating
Annex B (informative) Digestion is an open system using
microwave-assisted heating
Annex C (informative) Digestion is a closed system using
microwave-assisted heating
Annex D (informative) Digestion is a closed system using an
autoclave
Annex E (informative) Performance checks
Bibliography
Specifies a method for extracting trace elements from a water sample using nitric acid as a digestion agent. The method is applicable to all types of waters with a suspended solids concentration of less than 20 g/l and a total organic carbon (TOC) concentration expressed as carbon of less than 5 g/l.
| Committee |
EH/3/2
|
| DevelopmentNote |
Also numbered as BS 6068-2.77(2002). Supersedes 99/565774 DC. (04/2002) Reviewed and confirmed by BSI, July 2007. (06/2007)
|
| DocumentType |
Standard
|
| Pages |
28
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This part of ISO 15587 specifies a method for extracting trace elements from a water sample using nitric acid as a digestion agent. The method is applicable to all types of waters with a suspended solids concentration of less than 20 g/I and a total organic carbon (TOC) concentration expressed as carbon of less than 5 g/1.
The nitric acid digestion method is empirical and it might not necessarily release elements completely. However, for most environmental applications the result is fit for purpose.
Nitric acid digestion is suitable for the release of: Al*, As, B, Ba*, Be*, Ca, Cd, Co, Cr*, Cu, Fe*, Hg, K, Mg*, Mn, Mo, Na, Ni, P, Pb, Se, Sr, Tl, V*, Zn (asterisk indicates a possible lower recovery compared to aqua regia digestion method specified in ISO 15587-1, see reference [1]). It is suitable for the release of Ag only if the sample is stabilized immediately after digestion. Nitric acid digestion is not suitable for Sb, Sn and for the digestion of refractory compounds such as SiO2, TiO2 and Al2O3.
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.
| Standards | Relationship |
| UNE-EN ISO 15587-2:2002 | Identical |
| I.S. EN ISO 15587-2:2002 | Identical |
| NEN EN ISO 15587-2 : 2002 | Identical |
| NF EN ISO 15587-2 : 2002 | Identical |
| SN EN ISO 15587-2 : 2002 | Identical |
| NBN EN ISO 15587-2 : 2002 | Identical |
| UNI EN ISO 15587-2 : 2002 | Identical |
| EN ISO 15587-2:2002 | Identical |
| ISO 15587-2:2002 | Identical |
| NS EN ISO 15587-2 : 1ED 2002 | Identical |
| DIN EN ISO 15587-2:2002-07 | Identical |
| ISO 5667-3:2012 | Water quality Sampling Part 3: Preservation and handling of water samples |
| EN ISO 5667-3:2012 | Water quality - Sampling - Part 3: Preservation and handling of water samples (ISO 5667-3:2012) |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
| EN ISO 3696:1995 | Water for analytical laboratory use - Specification and test methods (ISO 3696:1987) |
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