Senior engineer LI Chaofeng and his team develop a new method of acquiring both ratios of 143Nd/144Nd and 147Sm/144Nd and concentrations of Sm-Nd simultaneously on the same filament arrangement by modified isotope dilution thermal ionization mass spectrometry (ID-TIMS) technique.
The measurement time and filament consumption are reduced by 50% with the current method, and therefore, the operation cost of TIMS is significantly reduced. Results obtained from a series of standard rock samples are in good agreement with recommended values.
Figure 1. Comparison results of 147Sm/144Nd and143Nd/144Nd ratios between tradition method and current modified method. (Image by LI)
Li et al. Simultaneous Determination of 143Nd/144Nd and 147Sm/144Nd Ratios and Sm-Nd Contents from the Same Filament Loaded with Purified Sm-Nd Aliquot from Geological Samples by Isotope Dilution Thermal Ionization Mass Spectrometry. Analytical Chemistry. 2012, 84: 6040-6047 (Download Here)
