Standard test method for trace quantities of total sulfur (Wickbold and Beckman combustion apparatus)
This method covers the determination of total sulfur primarily in the range from 2 to 25 ppM in volatile, normally liquid organic materials. The method may be extended to liquid materials with higher sulfur concentration and to viscous liquids and solids by using appropriate solvents. Samples should not contain more than 100 ppM of halogens, 2 ppM of barium, or 0.1 ppM of lead or appreciable ashforming substances. For the determination of total sulfur in liquefied petroleum gases see ASTM Method D 2784, Test for Sulfur in Liquefied Petroleum Gases (Oxy-Hydrogen Burner or Lamp). The sample is burned in an oxy-hydrogen atomizer burner. The oxides of sulfur are absorbed and oxidized to sulfuric acid in a hydrogen peroxide solution. The sulfate ions are determined then by either of the following finishes: barium perchlorate titration - the sulfate is titrated with barium perchlorate using a thorin-methylene blue mixed indicator; turbidimetric - the sulfate is precipitated as barium sulfate and the turbidity of a suspension of the precipitate is measured with a photometer. It is important to have the sulfur content of light liquid petroleum products at low enough concentrations to meet any applicable government regulations. The presence of sulfur may result in corrosion of metal surfaces. Sulfur may be poisonous to catalysts in subsequent processing.
- OSTI ID:
- 6784367
- Journal Information:
- Annu. Book ASTM Stand.; (United States), Vol. 24; Other Information: ANSI/ASTM-D--2785-80
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ORGANIC COMPOUNDS
CHEMICAL ANALYSIS
PETROLEUM FRACTIONS
SULFUR
OXIDATION
PHOTOMETRY
TITRATION
BARIUM PERCHLORATES
BARIUM SULFATES
CHEMICAL REACTIONS
COMBUSTION
HYDROGEN PEROXIDE
LIQUIDS
SULFURIC ACID
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHLORINE COMPOUNDS
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
NONMETALS
OXYGEN COMPOUNDS
PERCHLORATES
PEROXIDES
PETROLEUM
SULFATES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
023000* - Petroleum- Properties & Composition
400104 - Spectral Procedures- (-1987)