Direct Quantitative Analysis of Arsenic in Coal Fly Ash
Joint Authors
Hartuti, Sri
Takeyama, Akihiro
Kumabe, Kazuhiro
Kambara, Shinji
Moritomi, Hiroshi
Source
Journal of Analytical Methods in Chemistry
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-11-29
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
A rapid, simple method based on graphite furnace atomic absorption spectrometry is described for the direct determination of arsenic in coal fly ash.
Solid samples were directly introduced into the atomizer without preliminary treatment.
The direct analysis method was not always free of spectral matrix interference, but the stabilization of arsenic by adding palladium nitrate (chemical modifier) and the optimization of the parameters in the furnace program (temperature, rate of temperature increase, hold time, and argon gas flow) gave good results for the total arsenic determination.
The optimal furnace program was determined by analyzing different concentrations of a reference material (NIST1633b), which showed the best linearity for calibration.
The optimized parameters for the furnace programs for the ashing and atomization steps were as follows: temperatures of 500–1200 and 2150°C, heating rates of 100 and 500°C s−1, hold times of 90 and 7 s, and medium then maximum and medium argon gas flows, respectively.
The calibration plots were linear with a correlation coefficient of 0.9699.
This method was validated using arsenic-containing raw coal samples in accordance with the requirements of the mass balance calculation; the distribution rate of As in the fly ashes ranged from 101 to 119%.
American Psychological Association (APA)
Hartuti, Sri& Kambara, Shinji& Takeyama, Akihiro& Kumabe, Kazuhiro& Moritomi, Hiroshi. 2012. Direct Quantitative Analysis of Arsenic in Coal Fly Ash. Journal of Analytical Methods in Chemistry،Vol. 2012, no. 2012, pp.1-6.
https://search.emarefa.net/detail/BIM-472378
Modern Language Association (MLA)
Hartuti, Sri…[et al.]. Direct Quantitative Analysis of Arsenic in Coal Fly Ash. Journal of Analytical Methods in Chemistry No. 2012 (2012), pp.1-6.
https://search.emarefa.net/detail/BIM-472378
American Medical Association (AMA)
Hartuti, Sri& Kambara, Shinji& Takeyama, Akihiro& Kumabe, Kazuhiro& Moritomi, Hiroshi. Direct Quantitative Analysis of Arsenic in Coal Fly Ash. Journal of Analytical Methods in Chemistry. 2012. Vol. 2012, no. 2012, pp.1-6.
https://search.emarefa.net/detail/BIM-472378
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-472378