Testing the Ce Limit of Mass Bias Correction Using ¹⁴⁵Nd/¹⁴²Nd as Normalizing Ratio in Radiogenic Neodymium Isotope Analysis by MC-ICP-MS.

ABSTRACT:

Rationale

Neodymium isotopes are a powerful geochemical tool that has widely been used in terrestrial and extraterrestrial studies. Modern multicollector inductively coupled plasma mass spectrometers (MC-ICP-MS) allow fast, accurate, and precise analysis of the radiogenic Nd isotope ratio ¹⁴³Nd/¹⁴⁴Nd. These analyses comprise relatively high instrumental mass bias that is typically corrected for using the stable ¹⁴⁶Nd/¹⁴⁴Nd of 0.7219 and an exponential law. The instrument is usually tuned to optimize the operating conditions for isotope analysis, but this tuning is a trade-off primarily between signal intensity, stability, and accuracy. Alternative, more effective approaches for mass bias correction have been proposed that use ¹⁴⁵

SUBMITTER: Struve T 

PROVIDER: S-EPMC11623368 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature