54
From the results of these experiments and observations, Table 10 shows
sro radioisotopes which were not verified to be absent from the final samples
ard thus could be contributing errors to the calculated concentrations of those
isotopes reported in this work.
However, it is not likely that any of the
radioisotopes shown in Table 10, if present in the final samples, would be
present in concentrations great enough to effect a misinterpretation of the
data presented in this work.
TASLE 10.
Radionuclides whose presence in the final plated sample are unknown
Isotope of
interest
Possible interferring
radioisotopes
236p,,
2254.
239+240,, |
2085, | 21054, 2315,
242,
2085, 23154
2085,
2315, 248
2105,
245on 246
234),
2099 , 2315, 233,
4.2-5
Computational methods
The error term reported for the concentrations of alpha-
ecitting isotopes is the propagated alpha counting and calibration error,
witch was computed by using the following formula:
lo = es Xp + bkaq Xp
(cts Xp - bkg Xp)*
+
1
cts Sp
+ (error (s})2
2
wiere [x] = concentration of isotope of interest
{S$} = concentration of isotope used as chemical tracer
Xp = observed peak from alpha particles of isotope of interest
Sp = observed peak from alpha particles of isotope used for chemical
tracer