Issue 5, 2009
From the journal:

Journal of Analytical Atomic Spectrometry

Vapor generation coupled with furnace atomization plasma emission spectrometry for detection of mercury

Anderson S. Ribeiro,*a   Mariana A. Vieira,b   Patricia Grinbergc  and  Ralph E. Sturgeonc  

* Corresponding authors

a Department of Analytical and Inorganic Chemistry, Universidade Federal de Pelotas, Capão do Leão, RS, Brazil
E-mail: anderson.ribeiro@ufpel.edu.br

b Department of Chemistry, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, RJ, Brazil

c Institute for National Measurements Standards, National Research Council of Canada, Ottawa, ON, Canada

Abstract

A low power atmospheric pressure plasma source, furnace atomization plasma emission spectrometry (FAPES), was directly coupled to both a conventional chemical vapor generation system based on use of tin chloride reductant as well as a UV-photoreduction system for detection of cold vapor mercury. The resonance line emission at 253.7 nm was monitored. The 70 W low power He plasma was tolerant to the introduction of water vapor from the gas–liquid separator and, with the furnace heated to 400 °C, a precision of measurement of 2.4% RSD at 1 ng mL−1 was achieved. A limit of detection of 250 pg mL−1Hg in river water samples via UV-photoreduction and 240 pg mL−1 using conventional tin chloride reduction was obtained. The LOD could be improved 5-fold through use of a simple gold amalgamation system. Conventional chemical generation of mercury using the NaBH4/HCl system produced too much hydrogen to permit efficient coupling to the FAPES source as the He plasma is extinguished by the load of molecular vapor (i.e., hydrogen).

Graphical abstract: Vapor generation coupled with furnace atomization plasma emission spectrometry for detection of mercury

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Article information

DOI
https://doi.org/10.1039/B814401J
Article type
Technical Note
Submitted
19 Aug 2008
Accepted
11 Dec 2008
First published
11 Feb 2009

J. Anal. At. Spectrom., 2009,24, 689-694

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Vapor generation coupled with furnace atomization plasma emission spectrometry for detection of mercury

A. S. Ribeiro, M. A. Vieira, P. Grinberg and R. E. Sturgeon, J. Anal. At. Spectrom., 2009, 24, 689 DOI: 10.1039/B814401J

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