Standard test method for sulfur in liquefied petroleum gases (oxyhydrogen burner or lamp)
This method covers the determination of total sulfur in LP-gases containing more than 1 ppM. Samples should not contain more than 100 ppM of halogens. The sample is burned in an oxy-hydrogen burner, or in a lamp in a closed system in a carbon dioxide-oxygen atmosphere. The latter is not recommended for trace quantities of sulfur due to the inordinately long combustion times needed. The oxides of sulfur are absorbed and oxidized to sulfuric acid in a hydrogen peroxide solution. The sulfate ions are then determined 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 liquefied petroleum gases at low enough concentration to meet government regulations. The presence of sulfur may result in corrosion of metal surfaces. Sulfur may be poisonous to catalysts in subsequent processing.
- OSTI ID:
- 6607023
- Journal Information:
- Annu. Book ASTM Stand.; (United States), Journal Name: Annu. Book ASTM Stand.; (United States) Vol. 24; ISSN ASTSA
- Country of Publication:
- United States
- Language:
- English
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Standard test method for sulfur in petroleum products (lamp method)
Standard method of test for sulfur in petroleum products (lamp method)
Related Subjects
023000* -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104 -- Spectral Procedures-- (-1987)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM PERCHLORATES
BARIUM SULFATES
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
COMBUSTION
ELEMENTS
FLUIDS
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
INORGANIC ACIDS
LIQUEFIED PETROLEUM GASES
LIQUIDS
NATURAL GAS LIQUIDS
NONMETALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PERCHLORATES
PEROXIDES
PETROLEUM PRODUCTS
PHOTOMETRY
PRECIPITATION
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
SULFATES
SULFUR
SULFUR COMPOUNDS
SULFUR OXIDES
SULFURIC ACID
THERMOCHEMICAL PROCESSES
TITRATION