BS EN 13342:2000
Current
The latest, up-to-date edition.
Characterization of sludges. Determination of Kjeldahl nitrogen
Hardcopy , PDF
English
15-10-2000
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Limitations and interferences
6 Reagents
7 Apparatus
8 Sample pretreatment
9 Procedure
10 Expression of results
11 Test report
Annex A (informative) Performance data of interlaboratory
comparison
Specifies a method to determine the "Kjeldahl Nitrogen" in sludge and sludge products. Digestion is catalysed by copper or selenium, the temperature being raised by a high concentration of sodium sulphate. Although wet samples are usually taken for analysis, it is recognized practice to report results on a dry mass basis (g/kg).
| Committee |
EH/5
|
| DevelopmentNote |
Supersedes 98/563409 DC. (05/2005)
|
| DocumentType |
Standard
|
| Pages |
16
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This method describes a procedure for the determination of \'Kjeldahl Nitrogen\' in sludge and sludge products. The digestion is catalysed by selenium or copper, the temperature being raised by a high concentration of sodium sulphate. Although wet samples are normally taken for analysis, it is recognised practice to report results on a dry mass basis (g/kg). Consequently, it is also necessary to determine the dry residue of the homogenised sample used for analysis (see EN 12880).
| Standards | Relationship |
| NF EN 13342 : 2000 | Identical |
| NEN EN 13342 : 2000 | Identical |
| SN EN 13342 : 2000 | Identical |
| DIN EN 13342:2001-01 | Identical |
| UNI EN 13342 : 2002 | Identical |
| NBN EN 13342 : 2000 | Identical |
| I.S. EN 13342:2000 | Identical |
| UNE-EN 13342:2001 | Identical |
| EN 13342:2000 | Identical |
| NS EN 13342 : 1ED 2000 | Identical |
| ISO 5664:1984 | Water quality — Determination of ammonium — Distillation and titration method |
| EN 25663:1993 | Water quality - Determination of Kjeldahl nitrogen - Method after mineralization with selenium (ISO 5663:1984) |
| EN 12880:2000 | Characterization of sludges - Determination of dry residue and water content |
| EN ISO 5667-13:2011 | Water quality - Sampling - Part 13: Guidance on sampling of sludges (ISO 5667-13:2011) |
| EN ISO 3696:1995 | Water for analytical laboratory use - Specification and test methods (ISO 3696:1987) |
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