Standard test method for sulfur in petroleum products (lamp method)

Journal Article · Wed Jan 01 04:00:00 EST 1975 · Annu. Book ASTM Stand.; (United States)

OSTI ID:7296829

This method covers the determination of total sulfur in liquid petroleum products in concentrations above 0.002 wt percent. A special sulfate analysis procedure is described that permits the determination of sulfur in concentrations as low as 6 ppM. The sample is burned in a closed system, using a suitable lamp and an artificial atmosphere composed of 70 percent carbon dioxide and 30 percent oxygen to prevent formation of nitrogen oxides. The oxides of sulfur are absorbed and oxidized to sulfuric acid by means of hydrogen peroxide solution which is then flushed with air to remove dissolved carbon dioxide. Sulfur as sulfate in the absorbent is determined acidimetrically by titration with standard sodium hydroxide solution, or gravimetrically by precipitation as barium sulfate. Alternatively, the sample may be burned in air, the sulfur as sulfate in the absorbent being determined by precipitation as barium sulfate for weighing. For sulfur contents below 0.002 wt percent, it is necessary to determine the sulfate content in the absorber solution turbidimetrically as barium sulfate.

• OSTI ID: 7296829
• Journal Information: Annu. Book ASTM Stand.; (United States), Journal Name: Annu. Book ASTM Stand.; (United States) Vol. 26; ISSN ASTSA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
COMBUSTION
ELEMENTS
NONMETALS
OXIDATION
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
PRECIPITATION
SEPARATION PROCESSES
STANDARDS
SULFATES
SULFUR
SULFUR COMPOUNDS
TITRATION