METHODS FOR SAMPLING AND
INORGANIC ANALYSIS OF COAL
U.S. Geological Survey
Bulletin 1823
Edited by D.W. Golightly and F.O. Simon
Table 8. Short-lived indicator radionuclides
| Element | Indicator Radionuclide |
Half- life |
Preferred g-energy (keV) |
Limits
of Determination |
Potential Spectral Interferences (keV) |
|
| t1/2 > 1h, < 3h | ||||||
| Mn | 56Mn | 2.58 h | 846.7 | 1 | ||
| 1811.2 | ||||||
| Dy | 165Dy | 2.36 h | 94.7 | 0.1 | ||
| t1/2 < 1h | ||||||
| Mg | 27Mg | 9.5 min | 844.0 | 1% | 56Mn | 846.7 |
| 1014.1 | ||||||
| Al | 28Al | 2.27 min | 1778.9 | 50 | ||
| S | 37S | 5.04 min | 2081.8 | 1% | ||
| 3103.8 | ||||||
| Cl | 38Cl | 37.3 min | 1642.0 | 100 | ||
| Ca | 49Ca | 8.8 min | 2062.5 | 0.5% | ||
| Ti | 51Ti | 5.8 min | 320.1 | 0.1% | ||
| V | 52V | 3.76 min | 1434.0 | 50 | ||
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