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ASTM D6021-22
Standard Test Method for Measurement of Total Hydrogen Sulfide in Residual Fuels by Multiple Headspace Extraction and Sulfur Specific Detection
NORMA vydaná dňa 1.4.2022
Informácie o norme:
Označenie normy: ASTM D6021-22
Dátum vydania normy: 1.4.2022
Kód tovaru: NS-1058398
Počet strán: 7
Približná hmotnosť: 21 g (0.05 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM D6021-22 :
Keywords:
heavy distillates, heavy distillate/residual fuel blends, hydrogen sulfide, multiple headspace extraction, residual fuels, sulfur specific detection,, ICS Number Code 27.060.10 (Liquid and solid fuel burners)
Doplňujúce informácie
| Significance and Use | ||||||||||||||||||||
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5.1?Residual fuel oils can contain H5.1.1?The measurement of H2S in the liquid phase is appropriate for product quality control, while the measurement of H5.2?This test method was developed so refiners, fuel terminal operators and independent testing laboratory personnel can analytically measure the amount of H2S in the liquid phase of residual fuel oils. Note 1:?Test Method D6021 is one of three test methods for
quantitatively measuring H2S in residual fuels:
1) Test Method D5705 is a simple field test method for determining H2S levels in the vapor phase. 2) Test Method D7621 is a rapid test method to determine H2S levels in the liquid phase. 5.3?H2S concentrations in the liquid and vapor phase attempt to reach equilibrium in a static system. However, this equilibrium and the related liquid and vapor concentrations can vary greatly depending on temperature and the chemical composition of the liquid phase. A concentration of 1 mg/kg (?g/g) (ppmw) of H2S in the liquid phase of a residual fuel can typically generate an actual gas concentration of >50 ?L/L(ppmv) to 100 ?L/L(ppmv) of H2S in the vapor phase, but the equilibrium of the vapor phase is disrupted the moment a vent or access point is opened to collect a sample. Note 2:?Because of the reactivity, absorptivity, and
volatility of H2S any measurement method only
provides an H1.1?This
test method covers a method suitable for measuring the total amount
of hydrogen sulfide (H2S) in heavy distillates, heavy
distillate/residual fuel blends, or residual fuels as defined in
Specification D396 Grade 4, 5
(Light), 5 (Heavy), and 6, when the H2S concentration in the fuel is
in the 0.01 ?g/g (ppmw) to 100 ?g/g (ppmw) range.
1.2?The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3?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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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| 2. Referenced Documents | ||||||||||||||||||||
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