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. Author manuscript; available in PMC: 2019 Apr 11.
Published in final edited form as: J Radioanal Nucl Chem. 2018;318:10.1007/s10967-018-6032-9. doi: 10.1007/s10967-018-6032-9

Table 3.

Standard addition source preparation details and characteristics

Source
ID		 Mass of
scintillant (g)		 Mass of 229Th RM
aliquot (g)		 Mass of SRM 4328C
aliquot (g)		 Mass of blank
HNO3 (g)		 Total mass
cocktail (g)		 faq
(%)		 H#2
SA1 13.5365 0.076775 1.697757 0 15.3669 11.54 123.5 (5)
SA2 13.5657 0.201698 1.304430 0.2647 15.3962 11.50 123.2 (4)
SA3 13.5808 0.348458 0.995254 0.4289 15.416 11.50 123.6 (4)
SA4 13.5832 0.476746 0.600704 0.6948 15.4124 11.50 122.9 (4)
SA5 13.5711 0.632714 0.327851 0.8073 15.4002 11.48 123.1 (3)

Mass values have a standard uncertainty of < 0.01%. H# is a quench indicating parameter (as measured in Counter B for n = 10 replications) which is an additional indicator of the close composition matching. The values in parentheses represent the numerical values of the standard deviation of the mean for the quoted H#