Issue 1, 2024

Managing transition metal interferences during chemical vapor generation using the hydrolysis products of tetrahydridoborate: a proof-of-concept study

Abstract

The negative impact of liquid phase interferences of transition metals has plagued chemical vapor generation with tetrahydridoborate since its introduction, which was more than fifty years ago. Herein, the interference from selected transition metal ions in the generation of SbH3 and BiH3 was investigated using the hydrolysis products of NaBH4-hydridoboron intermediates (BH)-as derivatization reagents instead of NaBH4. The BH intermediates were simply generated on-line in a pre-hydrolysis coil of the instrumental set-up. Compared to NaBH4, the use of BH intermediates allowed for significantly improved tolerance to the interference of Ni(II), Co(II), and Cu(II) (tolerance limit of ≥100 mg L−1) for Bi and Sb determination in the absence of any masking agents and in a wide range of acidity. Their applicability to real complex samples was successfully demonstrated by the determination of Sb and Bi in steel and copper standard reference materials. Beyond the analytical application, this work aims to play a part in the comprehension of borohydride chemical behaviour, which is still not completely understood.

Graphical abstract: Managing transition metal interferences during chemical vapor generation using the hydrolysis products of tetrahydridoborate: a proof-of-concept study

Supplementary files

Article information

Article type
Communication
Submitted
31 Oct 2023
Accepted
01 Dec 2023
First published
01 Dec 2023
This article is Open Access
Creative Commons BY-NC license

J. Anal. At. Spectrom., 2024,39, 66-70

Managing transition metal interferences during chemical vapor generation using the hydrolysis products of tetrahydridoborate: a proof-of-concept study

M. Buoso, B. Campanella, M. Onor, E. Pitzalis and A. D'Ulivo, J. Anal. At. Spectrom., 2024, 39, 66 DOI: 10.1039/D3JA00381G

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