METHODS FOR SAMPLING AND
INORGANIC ANALYSIS OF COAL
U.S. Geological Survey
Bulletin 1823
Edited by D.W. Golightly and F.O. Simon
Table 16. Operating conditions for atomic absorption spectrometry
| Hollow Cathode | Spectral | |||
| Element | Wavelength (nm) | Lamp Current (mA) | Bandpass (nm) | Flame Type |
| Ca | 422.673 | 10 to 25 | 0.7 | Air-Acetylene Reducing |
| Fe | 248.327 | 30 | 0.2 | Air-Acetylene Oxidizing (lean, blue) |
| K | 766.491 | 12 | 2.0 | Air-Acetylene Oxidizing (lean, blue) |
| Mg | 285.213 | 6 to 15 | 0.7 | Air-Acetylene Oxidizing (lean, blue) |
| Mn | 279.482 | 20 to 30 | 0.2 | Air-Acetylene Oxidizing (lean, blue) |
| Na | 588.995 | 8 to 10 | 0.7 | Air-Acetylene Oxidizing (lean, blue) |
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