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ASTM E778-87(2004)

Заменен
Standard Test Methods for Nitrogen in the Analysis Sample of Refuse-Derived Fuel — 5 стр.
Значение и использование

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

Область применения

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 .

ICS
75.160.10 Solid. Including coal products, coke, peat, wood, derivatives of coal pyrolysis, etc. / Твердое топливо. Включая угольные продукты, кокс, торф, древесину и т.д.
Сборник ASTM
11.04 Waste Management / Управление отходами
Тематика
Waste Management