Variability of elemental concentrations in power plant ash

Holcombe, L.J.; Eynon, B.; Switzer, Paul

doi:10.1021/es00137a006

Cited by 15 publications

(4 citation statements)

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“…(1) mainly, atomic absorption spectroscopy (AAS) (see refs , , , , , , , , -, , , , , , , , , , , , , , , , −136, 138, 139, 141, 143, 145, 146, 148, 150, 154, 159, 187, 193, 207, 213−215), inductively coupled plasma−atomic emission spectroscopy (ICP−AES) (see refs , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , −217), X-ray fluorescence (XRF) (see refs , , , , , , , , , , , , , , , , , , , , , ,…”

Section: Chemical Analysesmentioning

confidence: 99%

“…(2) to a lesser extent, proton-induced X-ray emission (PIXE) (see refs , , , , , , , ), ion chromatography (see refs , , , , , , ), mass spectroscopy (MS) (see refs , , , , , , ), ion-selective electrode (see refs , , , , , ), X-ray absorption fine structure (XAFS) (see refs , , , , , ), electron probe microanalysis (EPMA), ,,,, spark source mass spectrometry (SSMS), ,,,, proton-induced gamma-ray emission (PIGE), ,,, and X-ray emission spectroscopy (XRES); ,,, …”

Section: Chemical Analysesmentioning

confidence: 99%

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Methods for Characterization of Composition of Fly Ashes from Coal-Fired Power Stations: A Critical Overview

2005

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The present state of the methods commonly used for characterization of the phase, mineral, and chemical composition of fly ashes from coal-fired power stations is described and summarized. The application of various methods is briefly discussed; these methods include macroscopic observations, ashing procedures (high-temperature and low-temperature), physical separations (density, magnetic, particle size, froth flotation, and electrostatic), chemical leaching, sequential physical and chemical treatments, as well as optical microscopy (reflected and transmitted), electron microscopy (scanning and transmission), X-ray diffractometry, differential thermal and thermogravimetric analyses, Mössbauer and infrared spectroscopy, and different chemical analyses. A short critical overview on the advantages and limitations is given, as well as certain recommendations during application of the above-listed methods. Some considerations about the practical use of data for fly ash composition are also present.

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Section: Chemical Analysesmentioning

confidence: 99%

Section: Chemical Analysesmentioning

confidence: 99%

Methods for Characterization of Composition of Fly Ashes from Coal-Fired Power Stations: A Critical Overview

2005

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“…Coal fly ash (SRM 1633) provides an example of a material having an inorganic oxide base with analytical and environmental interest. This material contains or adsorbs chemical species evolved in coal combustion, including a variety of transition metals at the microgram per gram level (22). Silicon makes up over 20% (w/w) of the sample mass and A1 another 13%, accounting for most of the mass as aluminosilicates (23).…”

Section: Resultsmentioning

confidence: 99%

Direct analysis of solids by graphite furnace atomic absorption spectrometry using a second surface atomizer

Rettberg¹,

Holcombe²

1986

Anal. Chem.

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“…The most important industrial origin of selenium is coal fly ash, with some selenium also originating in the ash of oil and municipal refuse. 7,[9][10][11] Although selenium is distributed throughout these combustion residues, it tends to be concentrated in the smallest particles, those <2 m, 12,13 which are the particles most difficult to remove from the flue stream and are those most readily respired. 14 However, the quantity of selenium in the larger fly ash particles also is significant.…”

Section: Introductionmentioning

confidence: 99%

Phase Formation in the System CaO‐SeO2‐H2O

Dumm

Brown

1997

Journal of the American Ceramic Society

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O are the stable calcium selenites. CaSeO 3 ⅐H 2 O exists over the pH range 12.5-3.7, making it the most important phase for natural systems as well as most technological applications. Ca(HSeO 3 ) 2 ⅐H 2 O is the more acidic phase; it exists over the pH range 3.7-0.4. Incongruent dissolution of Ca(HSeO 3 ) 2 ⅐H 2 O forms CaSeO 3 ⅐ H 2 O. These results indicate Ca 2 (HSeO 3 ) 2 (Se 2 O 5 ) is not a s t a b l e p h a s e a t 2 3°C . A t 8 0°C , C a S e O 3 ⅐ H 2 O ,

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Variability of elemental concentrations in power plant ash

Cited by 15 publications

References 1 publication

Methods for Characterization of Composition of Fly Ashes from Coal-Fired Power Stations: A Critical Overview

Methods for Characterization of Composition of Fly Ashes from Coal-Fired Power Stations: A Critical Overview

Direct analysis of solids by graphite furnace atomic absorption spectrometry using a second surface atomizer

Phase Formation in the System CaO‐SeO2‐H2O

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