Name: EN 16169:2012
Brand: CEN

Sludge, treated biowaste and soil - Determination of Kjeldahl nitrogen

Published date

22-08-2012

Publisher

Comite Europeen de Normalisation

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Interferences and sources of errors
6 Reagents
7 Apparatus
8 Sample storage and sample pretreatment
9 Procedure
10 Calculation
11 Expression of results
12 Precision
13 Test report
Annex A (informative) - Repeatability and
reproducibility data
Bibliography

This European Standard specifies the determination of Kjeldahl nitrogen according to the Kjeldahl procedure in sludge, treated biowaste and soil.Nitrate and nitrite are not included. Compounds with nitrogen bound in N-N, N-O linkages and some heterocycles (pyridines) are only partially determined.The limit of detection (LOD) is usually 0,03 % nitrogen, and the limit of quantification (LOQ) is 0,1 % nitrogen (using 0,25 mol/l sulfuric acid for titration).

Committee	CEN/TC 444
DevelopmentNote	Supersedes PREN 16169. (09/2012)
DocumentType	Standard
PublisherName	Comite Europeen de Normalisation
Status	Current

Standards	Relationship
UNI EN 16169 : 2012	Identical
I.S. EN 16169:2012	Identical
PN EN 16169 : 2012	Identical
SN EN 16169:2012	Identical
NF EN 16169 : 2012	Identical
NEN EN 16169 : 2012	Identical
NBN EN 16169 : 2012	Identical
UNE-EN 16169:2012	Identical
DIN EN 16169:2012-11	Identical
BS EN 16169:2012	Identical
NS EN 16169 : 2012	Identical

ISO 5663:1984	Water quality — Determination of Kjeldahl nitrogen — Method after mineralization with selenium
EN 13342:2000	Characterisation of sludges - Determination of Kjeldahl nitrogen
EN ISO 11732:2005	Water quality - Determination of ammonium nitrogen - Method by flow analysis (CFA and FIA) and spectrometric detection (ISO 11732:2005)
EN 25663 : 1993	WATER QUALITY - DETERMINATION OF KJELDAHL NITROGEN - METHOD AFTER MINERALIZATION WITH SELENIUM
ISO 11464:2006	Soil quality Pretreatment of samples for physico-chemical analysis
ISO 11732:2005	Water quality — Determination of ammonium nitrogen — Method by flow analysis (CFA and FIA) and spectrometric detection
EN 13654-1:2001	Soil improvers and growing media - Determination of nitrogen - Part 1: Modified Kjeldahl method
ISO 5667-15:2009	Water quality — Sampling — Part 15: Guidance on the preservation and handling of sludge and sediment samples
ISO 11261:1995	Soil quality — Determination of total nitrogen — Modified Kjeldahl method
ISO 5725-2:1994	Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
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)
EN 15002:2015	Characterization of waste - Preparation of test portions from the laboratory sample
EN ISO 5667-15:2009	Water quality - Sampling - Part 15: Guidance on the preservation and handling of sludge and sediment samples (ISO 5667-15:2009)
EN 15934:2012	Sludge, treated biowaste, soil and waste - Calculation of dry matter fraction after determination of dry residue or water content
EN 16179:2012	Sludge, treated biowaste and soil - Guidance for sample pretreatment
ISO 18512:2007	Soil quality Guidance on long and short term storage of soil samples