Standard method of test for forms of sulfur in coal. [Sulfate sulfur, pyritic sulfur, and organic sulfur]

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

OSTI ID:7344315

Methods are described for the determination of the three commonly recognized forms of sulfur in coal: sulfate sulfur, pyritic sulfur, and organic sulfur. Sulfate sulfur is determined by extracting a weighed sample of coal with dilute hydrochloric acid followed by precipitation of the sulfate with barium chloride and weighing as barium sulfate. Pyritic sulfur is determined by extracting a weighed sample with dilute nitric acid followed by titrimetric determination of iron in the extract. The dilute nitric acid oxidizes ferrous iron to ferric and sulfide sulfur to sulfate, both of which are soluble in HNO/sub 3/. Organic sulfur is determined by subtracting the sum of sulfate sulfur and pyritic sulfur from total sulfur as determined according to ASTM Method D3177. (BLM)

• OSTI ID: 7344315
• Journal Information: Annu. Book ASTM Stand.; (United States), Vol. 26; Other Information: ASTM-D--2492-68
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COAL
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
PYRITE
TITRATION
SULFUR
PRECIPITATION
ORGANIC SULFUR COMPOUNDS
STANDARDS
SULFATES
CARBONACEOUS MATERIALS
CHALCOGENIDES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
IRON COMPOUNDS
IRON SULFIDES
MINERALS
NONMETALS
ORES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PYRITES
SEPARATION PROCESSES
SULFIDES
SULFUR COMPOUNDS
SULFUR ORES
TRANSITION ELEMENT COMPOUNDS
010600* - Coal
Lignite
& Peat- Properties & Composition
400102 - Chemical & Spectral Procedures