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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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