METHODS FOR SAMPLING AND
INORGANIC ANALYSIS OF COAL
U.S. Geological Survey
Bulletin 1823
Edited by D.W. Golightly and F.O. Simon
Table 11. Instrumental operating conditions for XRF analysis of coal ash
| Element | Anode | kV | mA | Crystal |
| Na | Cr | 60 | 33 | Ovonyxa |
| Mg | Cr | 60 | 33 | Ovonyx |
| Al | Cr | 50 | 40 | PET |
| Si | Cr | 50 | 40 | PET |
| P | Cr | 50 | 40 | Ge |
| S | Cr | 50 | 40 | PET |
| K | Cr | 50 | 10 | LiF(200) |
| Ca | Cr | 50 | 10 | LiF(200) |
| Ti | Cr | 50 | 30 | LiF(200) |
| Mn | W | 50 | 40 | LiF(200) |
| Fe | W | 50 | 10 | LiF(200) |
| aThe Ovonyx crystal is a synthetic multiple-layer structure with a d-spacing of 2.28 nm. | ||||
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