Jump to main content
Jump to site search

Issue 11, 2016
Previous Article Next Article

Flux-free fusion technique using a boron nitride vessel and rapid acid digestion for determination of trace elements by ICP-MS

Author affiliations

Abstract

In this study, we present a new method for the dissolution of silicate rocks by flux-free fusion using a boron nitride vessel in preparation for analysis of bulk rock trace elements; this method is especially applicable to felsic intrusive rocks. The method was evaluated by analyzing five intrusive rocks (GSP-2, GSP-1, G-2, GSR-1 and QLO-1) and five extrusive rocks (AGV-2, BCR-2, BHVO-2, GSR-3 and RGM-2). The optimum conditions for the fusion of intrusive rocks were determined to be heating at 1600 °C for 1 min, which is effective to break up strong Si–O bonds. The fused glasses were dissolved using HF/HNO3 acids in closed screw-top Savillex vials on a hotplate; no high-pressure PTFE digestion bomb was required. Zr and Hf were completely recovered from the granodiorite GSP-2 reference material in 6 hours at 150 °C, which was 8 times faster than the method using a conventional high-pressure PTFE digestion bomb at 190 °C. The precision (RSD%, 1 s) of the elemental determinations in nearly 92% of the analyzed samples was better than 4%. Replicate analyses (n = 3) of the reference materials indicated that most of the results agreed with the reference values within a relative error of <10%. Additionally, the flux-free fusion retained all the materials in solution and was valid for volatile elements.

Graphical abstract: Flux-free fusion technique using a boron nitride vessel and rapid acid digestion for determination of trace elements by ICP-MS

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 25 Jul 2016, accepted on 09 Sep 2016 and first published on 09 Sep 2016


Article type: Paper
DOI: 10.1039/C6JA00269B
Citation: J. Anal. At. Spectrom., 2016,31, 2261-2271
  •   Request permissions

    Flux-free fusion technique using a boron nitride vessel and rapid acid digestion for determination of trace elements by ICP-MS

    Z. Bao, H. Zhang, H. Yuan, Y. Liu, K. Chen and C. Zong, J. Anal. At. Spectrom., 2016, 31, 2261
    DOI: 10.1039/C6JA00269B

Search articles by author