Work

A novel method for high-precision tungsten isotope measurements on small-size samples

Year: 2025

Type: article

Abstract: W ratio was 0.864868 ± 6 ppm (2 RSD, n = 29, t = 12 months) when the W amount was greater than 30 ng. Measurements on actual samples have shown that these methods are applicable to terrestrial rocks, stony and iron meteorites with sample sizes of 20-400 mg. This new protocol significantly reduces the background of the W separation process and improves precision of W isotope measurement for small-size samples, as well as solves the critical problem of uncertainty in W isotope ratios due to the inability to accurately determine O isotope compositions in previous studies.

Source: Talanta

DOI: 10.1016/j.talanta.2025.128684

Authors: Guiqin Wang, Zhen Yang, Yuming Xu, Yuling Zeng, Jifeng Xu

Institutions: Chinese Academy of Sciences, Guangzhou Institute of Geochemistry, University of Chinese Academy of Sciences, China University of Geosciences (Beijing)

Language: English

Topic: Geological and Geochemical Analysis

Subfield: Geophysics

Field: Earth and Planetary Sciences

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,610