The δ60/58Ni Values of Twenty‐Six Selected Geological Reference Materials. Issue 3 (14th May 2020)

• Record Type: Journal Article
• Authors: Li, Weihan; Zhu, Jian‐Ming; Tan, Decan; Han, Guilin; Zhao, Zhouqiao; Wu, Guangliang
• Is Part Of: Geostandards and geoanalytical research. Volume 44:Issue 3(2020)
• Page Start: 523
• Page End: 535
• Publication Date: 2020-05-14
• Subjects: nickel isotopes -- δ60/58Ni -- geological reference materials -- double spike -- MC‐ICP‐MS; Analytical geochemistry -- Periodicals; Géochimie analytique -- Périodiques; 551.9
• DOI: 10.1111/ggr.12321
• Languages: English
• ISSNs: 1639-4488

Abstract

Abstract : The high‐precision δ 60/58 Ni values of twenty‐six geological reference materials, including igneous rocks, sedimentary rocks, stream sediments, soils and plants are reported. The δ 60/58 Ni values of all samples were determined by double‐spike MC‐ICP‐MS (Nu Plasma III). Isotope standard solution (NIST SRM 986) and geological reference materials (BHVO‐2, BCR‐2, JP‐1, PCC‐1, etc.) were used to evaluate the measurement bias and intermediate precision over a period of six months. Our results show that the intermediate precision of Ni isotope determination was 0.05‰ (2 s, n = 69) for spiked NIST SRM 986 and typically 0.06‰ for actual samples, and the δ 60/58 Ni NIST SRM 986 values were in excellent agreement with previous studies. Eighteen high‐precision Ni isotope ratios of geological reference materials are first reported here, and their δ 60/58 Ni values varied from −0.27‰ to 0.52‰, with a mean of 0.13 ± 0.34‰ (2 s, n = 18). Additionally, SGR‐1b (0.56 ± 0.04‰, 2 s ), GSS‐1 (−0.27 ± 0.06‰, 2 s ), GSS‐7 (−0.11 ± 0.01‰, 2 s ), GSD‐10 (0.46 ± 0.06‰, 2 s ) and GSB‐12 (0.52 ± 0.06‰, 2 s ) could potentially serve as candidate reference materials for Ni isotope fractionation and comparison of Ni isotopic compositions among different laboratories. Key Points: δ 60/58 Ni values of twenty‐six RMs are presented, including igneous and sedimentary rocks, stream sediments, soils and plants. Eighteen δ 60/58 Ni values ranging from ‐0.27‰ to 0.52‰ are newly reported. SGR‐1b, GSS‐1, GSS‐7, GSD‐10 and GSB‐12 could potentially serve as candidate RMs for Ni isotope measurement.