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Journal of Automatic Chemistry
Volume 13, Issue 6, Pages 267-271
http://dx.doi.org/10.1155/S1463924691000421

Automated cold vapour flow-injection analysis of mercury at high concentrations

1Plymouth Analytical Chemistry Research Unit, Department of Environmental Sciences, Polytechnic Southwest, Drake Circus, Devon, Plymouth PL4 8AA, UK
2PS Analytical Ltd, Arthur House, B4 Chaucer Business Park, Watery Lane, Kemsing, Kent, Sevenoaks TN15 6QY, UK

Copyright © 1991 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Continuous-flow cold vapour- atomic fluorescence spectrometry is shown to be an extremely sensitive technique for the determination of mercury with detection limits typically below 0.01 μg l-1. Linear calibration ranges were found to be at least four orders of magnitude (i.e. up to 0.1 mg l-1). Samples with concentrations exceeding the linear range are susceptible to self-absorption, and may, in severe cases, cause carry-over problems between samples. The flow-injection approach has been utilized to extend the upper limit of the linear calibration range allowing determinations up to 10 mg l-1 of mercury. A range of certified reference materials and zinc battery anodes have been successfully analysed with a minimal number of sample dilutions.