Determination of Inorganic Selenium Species in Marine Waters by Hydride Generation–AFS

Bronwyn D. Wake; Edward C. V. Butler; Alison M. Featherstone; Patti Virtue; Bernard Averty; Pierre Michel

doi:10.1071/CH04072

RESEARCH ARTICLE

Determination of Inorganic Selenium Species in Marine Waters by Hydride Generation–AFS

Bronwyn D. Wake ^A ^B ^C , Edward C. V. Butler ^B ^D ^F , Alison M. Featherstone ^C , Patti Virtue ^A , Bernard Averty ^E and Pierre Michel ^E

+ Author Affiliations

- Author Affiliations

^A IASOS, University of Tasmania, Private Bag 77, Hobart TAS 7000, Australia.

^B CSIRO Division of Marine Research, GPO Box 1538, Hobart TAS 7000, Australia.

^C School of Chemistry, University of Tasmania, Private Bag 75, Hobart TAS 7000, Australia.

^D ACE-CRC, University of Tasmania, Private Bag 80, Hobart TAS 7000, Australia.

^E IFREMER, B.P. 1105, 44311 Nantes Cedex 03, France.

^F Author to whom correspondence should be addressed (e-mail: edward.butler@csiro.au).

Australian Journal of Chemistry 57(10) 937-943 https://doi.org/10.1071/CH04072
Submitted: 15 March 2004 Accepted: 30 June 2004 Published: 1 October 2004

Abstract

A method based on hydride generation with cryogenic trapping and atomic fluorescence detection was developed that is capable of determining both inorganic Se species (Se^IV and Se^VI) while at sea. Evaluation of the system for optimal performance was made for each stage of the analysis and detection sequence, as well as for the Se^VI reduction step. A detection limit of 0.4 ng L⁻¹ Se in a 10 mL sample was achieved using this method. Precision was better than 3.5% for 25, 100, and 1000 ng L⁻¹ Se^IV standard solutions. Accuracy was determined by recovery studies using natural samples and a certified reference seawater (NASS-5).

Acknowledgments

Thanks to Erik Madsen and Matt Sherlock for maintaining and updating the equipment. E.B. thanks Daniel Cossa (IFREMER), the French Ministry of Research, and the Australian Academy of Science for enabling his laboratory investigations in France in the early stages of this work. B.D.W. thanks Andrew Bowie and Paul Haddad for their support and guidance.

References

Determination of Inorganic Selenium Species in Marine Waters by Hydride Generation–AFS

Abstract

Acknowledgments

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