The Chemical Analysis of Argonne Premium Coal Samples
Edited by Curtis A. Palmer
U.S. Geological Survey Bulletin 2144
Determination of 33 Elements in Coal Ash from 8 Argonne Premium Coal Samples by Inductively Coupled Argon Plasma-Mass Spectrometry
By Allen L. Meier
Table 3. Comparison of reference values with mean concentrations of trace elements determined by 23 replicate ICAP-MS analyses of NIST standard reference material 1632b (coal) that was ashed and dissolved by the acid digestion method.
[All concentrations are in parts per million (ppm). The reference values for NIST standard reference material 1632b (coal) are from National Bureau of Standards (1985). ICAP-MS, inductively coupled argon plasma-mass spectrometry; NIST, National Institute of Standards and Technology, formerly the National Bureau of Standards; RSD, relative standard deviation (in percent); STD, standard deviation (in parts per million); --, no data]
| Element | Ref. value (ppm) |
This study | ||
| Mean (ppm) |
STD (ppm) |
RSD (%) |
||
| Ag | -- | 1.7 | 1.3 | 75 |
| As | 54.7 | 63 | 4.2 | 7 |
| Au | -- | <3.0 | -- | -- |
| Bi | -- | 1.7 | .2 | 14 |
| Cd | -- | 1.1 | .3 | 28 |
| Cs | 6.5 | 6.0 | 1.4 | 24 |
| Ga | -- | 44 | 3.1 | 7 |
| Ge | -- | 33 | 4.5 | 13 |
| Mo | 13.2 | 13 | .5 | 4 |
| Nb | -- | 24 | 1.3 | 5 |
| Pb | 54.0 | 63 | 8.2 | 13 |
| Rb | 74.3 | 75 | 21.2 | 28 |
| Sb | -- | 3.6 | .3 | 8 |
| Sn | -- | 9.5 | .5 | 5 |
| Te | -- | <.5 | -- | -- |
| Tl | -- | 2.3 | .3 | 12 |
| U | 6.4 | 6.6 | .6 | 8 |
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