Analysis of eastern coal fly ash separated sampling and excitation atomic emission spectrometry

Journal Article · Thu Jan 01 04:00:00 EST 1987 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00128a034· OSTI ID:6964012

Beckwith, P M; Mullins, R L; Coleman, D M

New methodology is described, using separated sampling and excitation atomic emission spectrometry, for the direct determination of elemental constituency of eastern coal fly ash. This technique uses a controlled-waveform high-voltage spark to sample coal fly ash mixed in a graphite pellet. No dissolution or other form of sample preparation is required. The resultant vapor is subsequently entrained into an inductively coupled plasma and observed spectroscopically. A two-point calibration is employed: British Chemical Standards Firebrick (BCS 315) and a pure graphite pellet are used as the high and low standards, respectively. Results for eight elements (Fe, Al, Ca, Mg, Ti, Na, K, and Si), reported as oxides, show typical accuracy and precision of +/- 5% relative standard deviation. Results for a variety of calculation methods, with and without internal standards and/or constituent normalization, are presented. Problems of volatilization in high sodium ash (e.g., western fly ash) and possible solutions are discussed. Application to a variety of similar matrix samples is discussed.

• Research Organization: Detroit Edison Co., MI
• OSTI ID: 6964012
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 59:1; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
20 FOSSIL-FUELED POWER PLANTS
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
AEROSOL WASTES
ALKALI METALS
ALKALINE EARTH METALS
ALUMINIUM
ASHES
CALCIUM
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
COAL
DATA
ELEMENTS
EMISSION SPECTROSCOPY
ENERGY SOURCES
EXPERIMENTAL DATA
FLY ASH
FOSSIL FUELS
FUELS
INFORMATION
IRON
MAGNESIUM
MATERIALS
METALS
NUMERICAL DATA
POTASSIUM
QUANTITATIVE CHEMICAL ANALYSIS
RESIDUES
SAMPLING
SEMIMETALS
SILICON
SODIUM
SPECTROSCOPY
TITANIUM
TRANSITION ELEMENTS
WASTES