An evaluation of a single-step extraction chromatography separation method for Sm-Nd isotope analysis of micro-samples of silicate rocks by high-sensitivity thermal ionization mass spectrometry

► This analytical protocol affords a simple and rapid analysis for Sm and Nd isotope in minor rock samples. ► The single-step separation method exhibits satisfactory separation effect for complex silicate samples. ► Corrected 143Nd/144Nd data show excellent accuracy even if the 140Ce16O+/144Nd16O+ ratio reached to 0.03.