Publication:
Electrodeposition on pyrolytic graphite platforms for electrothermal atomic-absorption spectroscopic determination of labile lead in saline water

1

Issued Date

1991-01-01

Resource Type

Article

ISSN

00399140

DOI

10.1016/0039-9140(91)80074-A

Other identifier(s)

2-s2.0-0009624207

Rights

Mahidol University

Rights Holder(s)

SCOPUS

Bibliographic Citation

Talanta. Vol.38, No.4 (1991), 375-383

Suggested Citation

Juwadee Shiowatana, Jaroslav P. Matousek Electrodeposition on pyrolytic graphite platforms for electrothermal atomic-absorption spectroscopic determination of labile lead in saline water. Talanta. Vol.38, No.4 (1991), 375-383. doi:10.1016/0039-9140(91)80074-A Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/22020

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Title

Electrodeposition on pyrolytic graphite platforms for electrothermal atomic-absorption spectroscopic determination of labile lead in saline water

Author(s)

Juwadee Shiowatana
 Jaroslav P. Matousek

Other Contributor(s)

Mahidol University
 University of New South Wales (UNSW) Australia

Abstract

A technique for the determination of labile Pb in sea-water has been developed which uses co-deposition with mercury on 6-14-mg pyrolytic graphite platforms, followed by electrothermal atomization of the deposit. Optimization of the applied voltage, pH and sodium chloride concentration with respect to the deposition efficiency yielded a detection limit of 0.15 μg/l. Pb for 120-sec depositions with a single platform. As the amount of deposit increases linearly with deposition time up to 5 min and the simultaneous use of two platforms increases the analytical signal by a factor of 1.73, a further improvement is possible. Near-shore sea-water and estuarine water samples containing lead in the concentration range 0.4-1.3 μg/l. were analysed with an RSD better than 10%. Background correction was not required as the technique eliminates spectral interferences due to molecular absorption. © 1991.

Keyword(s)

Chemistry

Availability

URI

https://repository.li.mahidol.ac.th/handle/123456789/22020

Collections

Scopus 1991-2000