METHODS FOR SAMPLING AND
INORGANIC ANALYSIS OF COAL
U.S. Geological Survey
Bulletin 1823
Edited by D.W. Golightly and F.O. Simon
Table 23. Concentrations of analytes determined for NBS standard reference material 1633a and for quality-control samples (m g/g)a
| Analyte | NBS 1633a | ASHl | S1 | S2 | S3 | |||||||||||||
| This Work | Certificate | |||||||||||||||||
| Cd | 0.98 | ± | 0.08 | 1.0 | ± | 0.15 | 0.71 | ± | 0.13 | 1.4 | ± | 0.2 | 0.52 | ± | 0.09 | 0.49 | ± | 0.1 |
| Cu | 114 | ± | 7 | 118 | ± | 3 | 141 | ± | 7 | 65 | ± | 4 | 81 | ± | 3 | 127 | ± | 4 |
| Li | 184 | ± | 14 | - | 153 | ± | 10 | 96 | ± | 13 | 273 | ± | 9 | 200 | ± | 23 | ||
| Mg(%) | 0.436 | ± | 0.005 | 0.455 | ± | .01 | 0.51 | ± | 0.03 | 0.65 | ± | 0.04 | 0.46 | ± | 0.02 | 0.58 | ± | 0.04 |
| Mn | 160 | ± | 12 | 190b | 160 | ± | 11 | 251 | ± | 10 | 124 | ± | 9 | 222 | ± | 22 | ||
| 190c | ||||||||||||||||||
| Na(%) | 0.158 | ± | 0.014 | 0.170 | ± | 0.01 | 0.18 | ± | 0.03 | 0.44 | ± | 0.04 | 0.13 | ± | 0.02 | 0.22 | ± | 0.02 |
| Pb | 62 | ± | 4 | 72.4 | ± | 0.4 | 185 | ± | 17 | 60 | ± | 8 | 44 | ± | 13 | 53 | ± | 7 |
| Zn | 211 | ± | 11 | 220 | ± | 10 | 147 | ± | 8 | 66 | ± | 13 | 89 | ± | 4 | 106 | ± | 6 |
| aConcentration
units for Mg and Na are percent, or cg/g. bConcentration listed "for information only" by NBS, that is, the value is not certified. cFrom Gladney (1980). |
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