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ASTM D 3590 : 2011

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

Standard Test Methods for Total Kjeldahl Nitrogen in Water

Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Superseded by

ASTM D 3590 : 2017

Language(s)

English

Published date

01-04-2011

€67.30
Excluding VAT

Committee
D 19
DocumentType
Test Method
Pages
9
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

1.1 These test methods cover the determination of total Kjeldahl nitrogen. The following test methods are included:

Sections
Test Method AManual Digestion/Distillation 8 to 14
Test Method BSemiautomated Colorimetric Bertholt15 to 23

1.2 The analyst should be aware that precision and bias statements included may not necessarily apply to the water being tested.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

8.1 This test method covers the determination of total Kjeldahl nitrogen in water. It measures free ammonia or ammonia formed from the conversion of nitrogen components of biological origin such as amino acids and proteins. However, the procedure may not convert the nitrogenous compounds of some wastes to ammonia. Examples of such compounds that may not be measured are nitro compounds, hydrozones, oximes, nitrates, semicarbazones, pyridines, and some refractory tertiary amines.

8.2 Three alternatives are described for the final determination of the ammonia: a titrimetric method, which is applicable to concentrations above 1 mg N/L; a Nesslerization method, which is applicable to concentrations below 1 mg N/L; and a potentiometric method which is applicable to the range from 0.04 to 1000 mg N/L.

8.3 This test method is described for micro and macro systems. Micro determination can be made on sample aliquots containing up to 10 mg of nitrogen.

15.1 This test method covers the automated determination of total Kjeldahl nitrogen in water and wastewater and is based on the same principle and subject to the same limitations as the manual method (see 8.1).

15.2 This test method is a semiautomated procedure applicable to drinking water, surface water, and domestic and industrial wastes containing from 0.3 to 5 mg/L of nitrogen.

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ASTM D 6696 : 2016 Standard Guide for Understanding Cyanide Species
ASTM D 8083 : 2016 Standard Test Method for Total Nitrogen, and Total Kjeldahl Nitrogen (TKN) by Calculation, in Water by High Temperature Catalytic Combustion and Chemiluminescence Detection
ASTM D 5511 : 2018 Standard Test Method for Determining Anaerobic Biodegradation of Plastic Materials Under High-Solids Anaerobic-Digestion Conditions
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