Testing water. Determination of Kjeldahl nitrogen.

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Main informations

Collections

National standards and national normative documents

Publication date

December 1981

Number of pages

7 p.

Reference

NF T90-110

ICS Codes

13.060.50 Examination of water for chemical substances

Classification index

T90-110

Print number

International kinship

ISO 5663:1984

Standard replaced by (1)

NF EN 25663

January 1994

Standard Current

Water quality - Determination of kjekldahl nitrogen - Method after mineralization with selenium

Specifies a procedure for the determination of trivalent negative nitrogen. Organic nitrogen in the form of azide, azine, azo, hydrazone, nitrite, nitro, nitroso, oxime or semicarbazone is not determined quantitatively. The procedure is applicable to the analysis of raw, potable and waste waters.

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