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 4. Comparison of reference values with mean concentrations of trace elements determined by 23 replicate ICAP-MS analyses of NIST standard reference material 1633a (coal fly ash) that was dissolved by the acid digestion method.
[All concentrations are in parts per million (ppm). The reference values for NIST standard reference material 1633a (coal fly ash) are from National Bureau of Standards (1979). 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 | -- | 2.3 | 1.7 | 76 |
| As | 145 | 172 | 9.1 | 5 |
| Au | -- | <3.0 | -- | -- |
| Bi | -- | 1.3 | .2 | 13 |
| Cd | 1 | 1.2 | .2 | 15 |
| Cs | 11 | 10 | 1.9 | 19 |
| Ga | 58 | 65 | 5.3 | 8 |
| Ge | 33.9 | 39 | 2.5 | 6 |
| Mo | 29 | 35 | 1.0 | 3 |
| Nb | -- | 30 | 2.5 | 8 |
| Pb | 72.4 | 83 | 7.4 | 9 |
| Rb | 131 | 148 | 30.7 | 21 |
| Sb | 6.8 | 7.3 | .5 | 7 |
| Sn | 10 | 9.2 | .7 | 7 |
| Te | -- | <.5 | -- | -- |
| Tl | 5.7 | 6.5 | .6 | 9 |
| U | 10.2 | 12 | .9 | 8 |
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