Abstract

A simple, versatile atomizer of the electrically heated graphite rod type is described and used for atomic absorption studies. The atomizer utilizes a burner head (directly under the rod) to produce a H₂-Ar-entrained air flame; the flame is primarily useful in minimizing ambient air entrainment in order to maintain a highly reducing environment directly above the rod where atomic absorption measurements are generally taken. Temperature profiles of the H₂-Ar-entrained air flames and also the temperatures of the graphite rod at various currents were measured, and appropriate plots are given. Several types of graphite and several different ways of holding liquid samples on the atomizer were also compared. Detection limits and analytical curves of aqueous solutions of Ag, As, Au, Cr, Cu, Fe, Mg, Ni, and Pb and oil-based solutions of Ag, Cu, and Fe are given. This atomizer should be of even greater use for atomic fluorescence studies.

A Heated Chamber Burner for Atomic Absorption Spectroscopy

A. A. Venghiattis
Appl. Opt. 7(7) 1313-1316 (1968)

Atomic Absorption Spectroscopy with High Temperature Flames

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

The Application of Separated Flames in Analytical Flame Spectroscopy

G. F. Kirkbright and T. S. West
Appl. Opt. 7(7) 1305-1311 (1968)

Detection of trace amounts of Cr by two laser-based spectroscopic techniques: laser-enhanced ionization in flames and laser-induced fluorescence in graphite furnace

Ove Axner and Halina Rubinsztein-Dunlop
Appl. Opt. 32(6) 867-884 (1993)

Hot Tube Atomic Absorption Spectrochemistry

Ray Woodriff and Ronald W. Stone
Appl. Opt. 7(7) 1337-1339 (1968)