ASTM-E778 Historical Revision Information
Standard Test Methods for Nitrogen in the Analysis Sample of Refuse-Derived Fuel

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Standard Test Methods for Nitrogen in Refuse-Derived Fuel Analysis Samples


1.1 These test methods cover the determination of total Kjeldahl nitrogen in (prepared analysis) samples of (solid forms) of refuse-derived fuel (RDF). The procedures measure free ammonia or ammonia formed from the conversion of organic nitrogenous compounds such as amino acids and proteins. However, the procedures may not convert the nitrogenous compounds of some wastes to ammonia. Examples of such compounds that may not be measured are nitro compounds, hydrozones, oxines, nitrates, semicarbazones, pyridines, and some refractory tertiary amines.

1.2 Two alternatives are described for the final determination of the ammonia, the Kjeldahl-Gunning Test Method and the Acid-Titration Test Method.

1.3 The analytical data from these test methods are to be reported as part of the ultimate analysis where ultimate analysis is requested.

1.4 These test methods may be applicable to any waste material from which a laboratory analysis sample can be prepared.

1.5 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. For specific precautionary statements see 8.4.1 and 9 Section .

Significance and Use

The standard sample is available to producers and users of RDF as a method for determining the weight percent of nitrogen in the analysis sample.

Nitrogen is part of the ultimate analysis and can be used for calculation of combustion parameters.

A = electric heater
B = Kjeldahl digestion flask
C = Kjeldahl connecting bulb
D = condenser
E = connecting tube
F = receiving flask

FIG. 1 Kjeldahl Distillation Apparatus


kjeldahl method; nitrogen content; resource recovery-solid waste refuse-derived fuel/RDF; nitrogen in analysis sample of refuse-derived fuel, test; ICS Number Code 75.160.10 (Solid fuels)

To find similar documents by ASTM Volume:

11.04 (Waste Management)

To find similar documents by classification:

75.160.10 (Solid fuels Including coal products, coke, peat, wood, derivatives of coal pyrolysis, etc. Coals, see 73.040)

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Document Number


Revision Level

1987 R04 EDITION



Modification Type


Publication Date

Jan. 1, 2004

Document Type

Test Method

Page Count

5 pages

Committee Number