Nd ratios of a Sm-doped Nd standard solution with 100 μg/L Nd and Sm/Nd of 0.2041. The isobaric interference was corrected using reported Sm isotopic compositions (9] Yang et al. 2010; 13] Wasserburg et al. 1981; 14
] McFarlane & McCulloch 2007; 15
] Berglund & Wieser 2011). Solid and dashed lines respectively represent an average measured 143Nd/144Nd ratio and 2σ S.D. of the unspiked Nd standard solution.