Tetsuya Yokoyama & Eizo Nakamura (2004) Precise analysis of the 228Ra/226Ra isotope ratio for short-lived U-series disequilibria in natural samples by total evaporation thermal ionization mass spectrometry (TE-TIMS), Journal of Analytical Atomic Spectrometry, 19, 717-727, doi:10.1039/B400829D. < 20191011113816-801170 > pub
Table 2 Repeated analysis of Ra abundance in GSJ standard by TE-TIMS < 20191011143002-687320 > pub
measured unit JB2-1 JB2-2
[226Ra] a fg/g 81.13 (0.49) 81.25 (0.51)
[Th] a µg/g 0.269 0.269
230Th/232Th a 1.205 1.205
226Ra/230Th a 2.253 (0.024) 2.257 (0.024)
(a) determined by U-Series_procedures of Yokoyama et al. (1999, 2001, 2003) on TIMS Thermo-Fisher MAT262
name physical-form quantity unit global-id
JB2-1 pub powder 20191009112953-380419
JB2-2 pub powder 20191009112953-679750

The table is created from analysis shown below. The rowname Ra (Yokoyama et al., 2004) filters out analysis. Upper analysis has priority.To list more analysis, add a stone in stone sub-tab.

  • name
    technique
    device
    priority
JB2-1 JB2-2