Distribution of certain minor elements in Alaskan coals

Book · Mon Jan 01 04:00:00 EST 1968

OSTI ID:6306879

Rao, D P

Selected coals from northern Alaska were analyzed for 15 minor and trace elements and float-sink tests were performed to determine elemental distribution between the inorganic and organic fractions of the coals. Samples were collected from freshly exposed coal seams in operating mines, abandoned mines, and seams exposed by natural erosion. Elemental analysis was performed spectrographically and by atomic absorption. Element concentrations did not vary significantly between coal ashes from the various coal fields sampled. Concentrations of Pb, Ga, Cu, Be, Ba, Ni, Ti, V, Zr, Co, Cr, Ge, and Sn were lower in the ash of low rank coals than higher rank coals. Generally the higher ranked coals exhibited greater elemental concentrations in the float ash than in the sink ash. The organic association (affinity) of the elements in the coals studied was ranked as follows: Ge > (V, Be, Co) > Ni > (Cr, Ba, Zr) > Ti > (Ga,Cu) > Pr. Trace element concentration in Alaskan coal was comparable to that in coals of the lower 48 states.

• OSTI ID: 6306879
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
ALASKA
ALKALINE EARTH METALS
BARIUM
BERYLLIUM
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
CHEMISTRY
CHROMIUM
COAL
COAL DEPOSITS
COBALT
COPPER
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
GALLIUM
GEOCHEMISTRY
GEOLOGIC DEPOSITS
GERMANIUM
LEAD
MATERIALS
METALS
MINERAL RESOURCES
NICKEL
NORTH AMERICA
PACIFIC NORTHWEST REGION
RESOURCES
SAMPLING
TIN
TITANIUM
TRACE AMOUNTS
TRANSITION ELEMENTS
USA
VANADIUM
ZIRCONIUM