Optimization of electrothermal atomization parameters for simultaneous multielement atomic absorption spectrometry
Analytical Chemistry
By: J. M. Harnly and Jean S. Kane
Links
- More information: Publisher Index Page (via DOI)
- Download citation as: RIS | Dublin Core
Abstract
The effect of the acid matrix, the measurement mode (height or area), the atomizer surface (unpyrolyzed and pyrolyzed graphite), the atomization mode (from the wall or from a platform), and the atomization temperature on the simultaneous electrothermal atomization of Co, Cr, Cu, Fe, Mn, Mo, Ni, V, and Zn was examined. The 5% HNO3 matrix gave rise to severe irreproducibility using a pyrolyzed tube unless the tube was properly "prepared". The 5% HCl matrix did not exhibit this problem, and no problems were observed with either matrix using an unpyrolized tube or a pyrolyzed platform. The 5% HCl matrix gave better sensitivities with a pyrolyzed tube but the two matrices were comparable for atomization from a platform. If Mo and V are to be analyzed with the other seven elements, a high atomization temperature (2700??C or greater) is necessary regardless of the matrix, the measurement mode, the atomization mode, or the atomizer surface. Simultaneous detection limits (peak height with pyrolyzed tube atomization) were comparable to those of conventional atomic absorption spectrometry using electrothermal atomization above 280 nm. Accuracies and precisions of ??10-15% were found in the 10 to 120 ng mL-1 range for the analysis of NBS acidified water standards.
Suggested Citation
Harnly, J.M., Kane, J., 1984, Optimization of electrothermal atomization parameters for simultaneous multielement atomic absorption spectrometry: Analytical Chemistry, v. 56, no. 1, p. 48-54, https://doi.org/10.1021/ac00265a014.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Optimization of electrothermal atomization parameters for simultaneous multielement atomic absorption spectrometry |
| Series title | Analytical Chemistry |
| DOI | 10.1021/ac00265a014 |
| Volume | 56 |
| Issue | 1 |
| Publication Date | May 01, 2002 |
| Year Published | 1984 |
| Language | English |
| Publisher | ACS Publications |
| Description | 7 p. |
| First page | 48 |
| Last page | 54 |