METHODS FOR SAMPLING AND
INORGANIC ANALYSIS OF COAL
U.S. Geological Survey
Bulletin 1823
Edited by D.W. Golightly and F.O. Simon
Table 19. Operating parameters: flame and graphite-furnace atomization
| Element | Wavelength (nm) |
Bandpass (nm) |
Background Correction |
Cella | Matrix |
| Cd | 228.8 | 0.7 | Yes | Graphite Furnace | 0.5% ash solution; extract in 5% HCl |
| Cu | 324.7 | 0.7 | No | Flame | 1% ash solution in 5% HCl |
| Li | 670.8 | 1.4 | No | Flame | 1% ash solution in 5% HCl |
| Mg | 285.2 | 0.7 | No | Flame | 0.01% ash solution in 5% HCl |
| Mn | 279.5 | 0.2 | No | Flame | 1% ash solution in 5% HCl |
| Na | 589.0 | 0.2 | No | Flame | 0.1% ash solution in 5% HCl |
| Pb | 217.0 | 0.7 | Yes | Flame | 0.1% ash solution in 5% HCl |
| Zn | 213.9 | 0.7 | Yes | Flame | 1% ash solution in 5% HCl |
| aFlame:
Fuel-lean air-acetylene. Graphite furnace: 20--,uL sample, argon sheath gas, conventional graphite tube. Furnace sequence: (1) Dry for 20 s at 110° C. (2) Char for 25 s at 250° C. (3) Atomize for 5 s at 2,100° C with 1 s ramp to temperature. Interrupt gas flow (default to 50 mL/min with the model 2100 HGA). |
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