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Standard Test Method for Oxides of Nitrogen in Gaseous Combustion Products (Phenol-Disulfonic Acid Procedures)
Automaticky preložený názov:
Štandardná skúšobná metóda pre oxidy dusíka v plynnej produkty spaľovania (fenol-disulfónová postupy)
NORMA vydaná dňa 1.3.2009
Označenie normy: ASTM D1608-98(2009)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.3.2009
Kód tovaru: NS-17831
Počet strán: 6
Približná hmotnosť: 18 g (0.04 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
combustion sources, emissions, EPA Method 7, Method 7, oxides of nitrogen, phenol-disulfonic acid procedure, stack emissions, total oxides of nitrogen, Atmospheric analysis, Emission testing--stacks and flues, Gaseous environments, Nitrogen oxides, Phenol-disulfonic acid procedures, Spectrophotometry--absorption, ICS Number Code 71.040.40 (Chemical analysis)
Significance and Use | ||||||||||||
This test method provides a means to measure the total nitrogen oxides (NOx) content of gaseous emissions for purposes such as determining compliance with regulations, studying the effect of various abatement procedures on NOx emissions, and checking the validity of instrumental measurements. |
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1. Scope | ||||||||||||
1.1 This test method describes the phenol-disulfonic acid colorimetric procedure (1)2 for the determination of total oxides of nitrogen [nitrous oxide (N2O) excepted] in gaseous effluents from combustion and other nitrogen oxidation processes. 1.2 It is applicable to a concentration range of oxides of nitrogen as nitrogen dioxide (NO2) of 5 ppm to several thousand parts per million by volume (four to several thousand milligrams per dry standard cubic metre). 1.3 Since the grab sampling technique used takes a relatively small sample over a very short period of time, the result obtained will be an instantaneous measure of the nitrogen oxides and, therefore, will be representative of the emissions only if the gas stream is well mixed and the concentration constant with time. Multiple samples are recommended. 1.4 The values stated in SI units are to be regarded as standard. The SI equivalents are in parentheses and may be approximate. 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 more specific safety precautionary information see 8.5 and Section 3.) |
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2. Referenced Documents | ||||||||||||
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