Survey of emission x-ray analysis of coal

Conference · Sat Jan 01 04:00:00 EST 1977 · Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States)

OSTI ID:5204940

Kuhn, J K; Henderson, L R

A survey of emission x-ray analysis of coal covers the two types of spectroscopic systems available; excitation sources for x-ray emissions; the lack of adequate standards, with certified standards available only for trace elements in coal and fly ash;problems in obtaining representative samples due to the large variation in physical properties of coals, chars, ashes, residues, and products of coal liquefaction and gasification; methods of compensating for matrix absorption of x-rays, including dilution with inert material, use of thin samples, and mathematical correction procedures based on measured mass absorption coefficients or Compton scatter; types of samples which can be handled; precision of x-ray emission systems, generally 5 to 25%, with poorer results for elements of low than high atomic number; and detection limits, which range from 100 ppM for sodium to 0.5 ppM for elements heavier than iron. 19 references.

• OSTI ID: 5204940
• Conference Information: Journal Name: Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States) Journal Volume: 22:5
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400103 -- Radiometric & Radiochemical Procedures-- (-1987)
AEROSOL WASTES
ALKALI METALS
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
COAL
COAL GAS
COAL LIQUIDS
ELEMENTS
ENERGY SOURCES
FLUIDS
FLY ASH
FOSSIL FUELS
FUELS
GASES
IRON
METALS
NONDESTRUCTIVE ANALYSIS
PHYSICAL PROPERTIES
SODIUM
TRANSITION ELEMENTS
WASTES
X-RAY EMISSION ANALYSIS