Jump to main content
Jump to site search

Issue 20, 2014
Previous Article Next Article

Direct determination of niobium at the low nanogram level in mineral waters and freshwaters

Author affiliations

Abstract

The increasing use of elements such as Nb and Ta in green and information technologies makes it necessary to develop appropriate analytical methods for studying their environmental and ecotoxicological behaviour. This paper describes the first time Nb has been directly identified in mineral and freshwaters, using inductively coupled plasma sector field mass spectrometry (ICP-SFMS). The scant values of Nb concentrations in freshwaters published include many values which are very close, or directly below, the detection limit of the technique used; when low values are reported, the techniques used often include solid phase extraction preconcentration; with the associated difficulty in obtaining low blanks and risk of incomplete resin desorption. We analysed 20 water samples of contrasting characteristics along with certificate reference material SLRS-5. Values detected ranged from 0.3 to 12 ng L−1. No sample was below the detection limit. Our results show that the determination of Nb by ICP-SFMS is possible, although it is not a routine analysis (i.e., it requires excellent blanks and machine response stability). These results are consistent with existing information. Currently, Nb ecotoxicological characteristics and behaviour in environmental compartments are essentially unknown; the possibility of directly determining Nb at these concentrations opens up new avenues for studying this element at meaningful environmental levels.

Graphical abstract: Direct determination of niobium at the low nanogram level in mineral waters and freshwaters

Back to tab navigation

Supplementary files

Publication details

The article was received on 06 Aug 2014, accepted on 03 Sep 2014 and first published on 04 Sep 2014


Article type: Technical Note
DOI: 10.1039/C4AY01860E
Author version
available:
Download author version (PDF)
Anal. Methods, 2014,6, 8090-8093

  •   Request permissions

    Direct determination of niobium at the low nanogram level in mineral waters and freshwaters

    M. Filella, D. Magnenat and M. Bensimon, Anal. Methods, 2014, 6, 8090
    DOI: 10.1039/C4AY01860E

Search articles by author

Spotlight

Advertisements