NEN EN ISO 11905-1 : 1998
Current
The latest, up-to-date edition.
WATER QUALITY - DETERMINATION OF NITROGEN - PART 1: METHOD USING OXIDATIVE DIGESTION WITH PEROXODISULFATE
01-12-2013
1 Scope
2 Normative references
3 Range of detection
4 Sensitivity
5 Principle
6 Reagents
7 Apparatus
8 Sampling and samples
9 Procedure
9.1 Test portion
9.2 Blank test
9.3 Cleaning digestion vessels
9.4 Digestion
9.5 Verification of recovery of organic nitrogen
9.6 Starting operation
9.7 Initial sensitivity setting
9.8 Calibration
9.9 Determination
10 Expression of results
10.1 Method of calculation
10.2 Precision data
11 Test report
Defines a procedure for determining the nitrogen content in water, in the form of free ammonia, nitrite, nitrate and organic nitrogen compounds capable of converting to nitrate under the oxidative conditions described. Does not determine dissolved nitrogen. Applies to the analysing of natural fresh water, sea water, drinking, surface water and treated sewage effluent. ALSO KNOWN AS BS 6068-2.62(1998)
| DocumentType |
Standard
|
| PublisherName |
Netherlands Standards
|
| Status |
Current
|
| Standards | Relationship |
| BS EN ISO 11905-1:1998 | Identical |
| UNI EN ISO 11905-1 : 2001 | Identical |
| EN ISO 11905-1:1998 | Identical |
| ISO 11905-1:1997 | Identical |
| UNE-EN ISO 11905-1:1998 | Identical |
| DIN EN ISO 11905-1:1998-08 | Identical |
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