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Journal of Analytical Science and Technology

Table 2 The blank (BLK) and Gran Sasso (GS) groundwater signal values (columns 2 and 3)

From: Low-level 226Ra determination in groundwater by SF-ICP-MS: optimization of separation and pre-concentration methods

Isotope

BLK (s−1)

GS sample (s−1)

Sr resin (s−1)

EVAPC (s−1)

Std (s−1)

138Ba

149 · 103

97 · 106

3 · 106

120 · 106

–

88Sr

44 · 103

51 · 106

490 · 103

19.7 · 106

63.9 · 106

139La

175

1.8 · 103

–

90.5 · 103

960 · 103

140Ce

475

830

–

41.5 · 103

910 · 103

146Nd

308

1.4 · 103

–

68 · 103

200 · 103

226Ra

0.6

–

–

–

0.6

  1. The fourth and fifth columns report signal values after Sr elution and total pre-concentration procedure, respectively. The sixth column reports signal values of a Ce, La, Nd, and Sr standard (50 pg g−1 of Ce, La, and Nd and 10 ng g−1 of Sr) for interference evaluation
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