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Standard Test Method for Determination of Sulfur Compounds in Natural Gas and Gaseous Fuels by Gas Chromatography and Flame Photometric Detection (Withdrawn 2019)
Automatische name übersetzung:
Standard Test Methode zur Bestimmung von Schwefelverbindungen in Erdgas und gasförmigen Brennstoffen durch Gaschromatographie und flammenphotometrische Detektion
NORM herausgegeben am 1.12.2010
Bezeichnung normen: ASTM D6228-10
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 1.12.2010
SKU: NS-34302
Zahl der Seiten: 8
Gewicht ca.: 24 g (0.05 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
flame photometric detection, gas chromatography, pulsed flame photometric detector, sulfur compounds, odorants, Odorants, Flame photometry, Fuel sulfur, Gas chromatography (GC)--gaseous fuels, Gaseous fuels, Natural gas service systems, ICS Number Code 71.040.50 (Physicochemical methods of analysis), 75.160.10 (Solid fuels)
Significance and Use | ||||||||||||||||
Many sources of natural gas and petroleum gases contain varying amounts and types of sulfur compounds, which are odorous, corrosive to equipment, and can inhibit or destroy catalysts used in gas processing. Their accurate measurement is essential to gas processing, operation, and utilization. Small amounts, typically, 1 to 4 ppmv of sulfur odorant compounds, are added to natural gas and liquefied petroleum (LP) gases for safety purposes. Some odorant compounds can be reactive and may be oxidized, forming more stable compounds having lower odor thresholds. These gaseous fuels are analyzed for sulfur odorants to help ensure appropriate odorant levels for safety. This test method offers a technique to determine individual sulfur species in gaseous fuel and the total sulfur content by calculation. Gas chromatography is used commonly and extensively to determine other components in gaseous fuels including fixed gas and organic components (see Test Method D1945). This test method dictates the use of a specific GC technique with one of the more common detectors for measurement. |
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1. Scope | ||||||||||||||||
1.1 This test method covers the determination of individual volatile sulfur-containing compounds in gaseous fuels by gas chromatography (GC) with a flame photometric detector (FPD) or a pulsed flame photometric detector (PFPD). The detection range for sulfur compounds is from 20 to 20 000 picograms (pg) of sulfur. This is equivalent to 0.02 to 20 mg/m3 or 0.014 to 14 ppmv of sulfur based upon the analysis of a 1-mL sample. 1.2 This test method describes a GC method using capillary column chromatography with either an FPD or PFPD. 1.3 This test method does not intend to identify all individual sulfur species. Total sulfur content of samples can be estimated from the total of the individual compounds determined. Unknown compounds are calculated as monosulfur-containing compounds. 1.4 The values stated in SI units are to be regarded as standard. The values stated in inch-pound units are for information only. 1.5 This standard does not purport to address all 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. |
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2. Referenced Documents | ||||||||||||||||
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