Multitechnique multielemental analysis of coal and fly ash

Journal Article · Thu May 01 04:00:00 EDT 1980 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac50056a036· OSTI ID:5201726

Nadkarni, R A

The coal sample is first ashed with high temperature ashing or with RF plasma low temperature ashing. The coal ash or fly ash can be analyzed for major ash elements by fusing with lithium tetraborate in an automatic fusion device, the Claisse Fluxer. The ash samples are also dissolved in a Parr bomb in a mixture of aqua regia and HF. Subsequently, the solutions are analyzed for eight major (Al, Ca, Fe, K, Mg, Na, Si, and Ti) and 20 trace elements (As, B, Ba, Be, Cd, Co, Cr, Cu, Li, Mn, Mo, Ni, P, Pb, Sb, Se, Sr, U, V, and Zn) by inductively coupled plasma emission spectroscopy. Mercury in coal and fly ash is determined on a separate aliquot by the cold vapor atomic absorption technique. Fluorine and chlorine in the samples are determined by fusing with Na/sub 2/CO/sub 3/ and Eschka mixture, respectively, and then measuring the two ions in solution with specific ion electrodes. Oxygen in the samples can be determined rapidly and nondestructively by 14-MeV neutron activation analysis. These methods have been tested by analyzing several NBS coal and fly ash standards with good accuracy and reproducibility. 10 tables.

• Research Organization: Exxon Research and Engineering Co., Baytown, TX
• OSTI ID: 5201726
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 52:6; ISSN ANCHA
• Country of Publication: United States
• Language: English

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ABSORPTION SPECTROSCOPY
ACTINIDES
ACTIVATION ANALYSIS
AEROSOL WASTES
AIR POLLUTION
ALKALI METAL COMPOUNDS
ALKALI METALS
ALKALINE EARTH METALS
ALUMINIUM
ANTIMONY
AQUA REGIA
ARSENIC
BARIUM
BARYONS
BERYLLIUM
BORON
CADMIUM
CALCIUM
CARBON COMPOUNDS
CARBONACEOUS MATERIALS
CARBONATES
CHEMICAL ANALYSIS
CHLORINE
CHROMIUM
COAL
COBALT
COPPER
CRYOGENIC FLUIDS
DRY ASHING
ELEMENTARY PARTICLES
ELEMENTS
EMISSION SPECTROSCOPY
ENERGY SOURCES
FERMIONS
FLUIDS
FLUORINE
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FOSSIL FUELS
FUELS
HADRONS
HALOGENS
HYDROFLUORIC ACID
HYDROGEN COMPOUNDS
INORGANIC ACIDS
ION SELECTIVE ELECTRODE ANALYSIS
IRON
LEAD
LITHIUM
MAGNESIUM
MANGANESE
MERCURY
METALS
MOLYBDENUM
MULTI-ELEMENT ANALYSIS
NATIONAL ORGANIZATIONS
NEUTRONS
NICKEL
NONMETALS
NUCLEONS
OXYGEN
OXYGEN COMPOUNDS
PHOSPHORUS
POLLUTION
POTASSIUM
QUALITATIVE CHEMICAL ANALYSIS
REFRACTORY METALS
SELENIUM
SEMIMETALS
SILICON
SODIUM
SODIUM CARBONATES
SODIUM COMPOUNDS
SPECTROSCOPY
STRONTIUM
TITANIUM
TRANSITION ELEMENTS
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US DOC
US NBS
US ORGANIZATIONS
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