Abstract

A method for the analysis of sodium, potassium, calcium, and magnesium in siliceous coal ash and related materials by atomic absorption spectroscopy is presented. The method involves the dissolution of all complex silicates present in coal ash after fusing with lithium tetraborate flux. Working curves utilizing standards composed of complex silicates are shown to be more accurate than the common water standards. The use of lithium tetraborate as a flux should also allow the method to be extended to permit the analysis of all major constituents of coal ash.

Spectrochemical Analysis of Ceramics and Other Non-Metallic Materials*

Edwin K. Jaycox
J. Opt. Soc. Am. 37(3) 162-165 (1947)

Wide Range Analysis for Zinc Using Spectrographic Line Widths

E. John Eastmond and Bernice E. Williams
J. Opt. Soc. Am. 38(9) 800-803 (1948)

Optimal boiler control through real-time monitoring of unburned carbon in fly ash by laser-induced breakdown spectroscopy

Miki Kurihara, Koji Ikeda, Yoshinori Izawa, Yoshihiro Deguchi, and Hitoshi Tarui
Appl. Opt. 42(30) 6159-6165 (2003)

Atomic Absorption Spectroscopy with High Temperature Flames

J. B. Willis
Appl. Opt. 7(7) 1295-1304 (1968)

Two-wavelength laser transmissometer for measurements of the mean size and concentration of coal ash droplets in combustion flows

P. C. Ariessohn, S. A. Self, and R. H. Eustis
Appl. Opt. 19(22) 3775-3781 (1980)