Flow Injection Atomic Absorption Spectrometry in Solution for Determination of Mercury

  • Sirwan Shawket University of Salahaddin
Keywords: Mercury, Flow injection analysis, Stopped and merging zone technique, Atomic absorption in solution

Abstract

A stopped-flow injection and the merging zone stopped-flow injection technique used for cold atomization with atomic absorption spectrophotometric determination of mercury in solution by reaction with sodium borohydride as reducing agent. All the flow-injection and chemical variables affecting the sensitivity and peak profile are optimized. The atomic absorption signal gave a linear range of 10-80 μgml-1 mercury for the first FIA-manifold by injection 50μl sample with a correlation coefficient of 0.994 and a low detection limit (50ng absolute) were observed. The relative standard deviation found was 1.68% with a sample throughput 75 sample h-1. The second FIA- manifold illustrate a determining of mercury in the range 2-50 μgml-1 with a correlation coefficient of 0.9992. A low detection limit (5ng absolute), good precision (1.99% relative) and a sampling rate of up to 60 samples h-1 were obtained. The method developed is highly selective and relatively simple.

Author Biography

Sirwan Shawket, University of Salahaddin

Chemistry Department, College of Education, Salahaddin University, Erbil, Kurdistan Region – Iraq.

References

Brunetto, M. R., Luna, J., Zambrano, A., Gallignani and petit de Pena Y. (1999) , Flow injection and hydride generation for determination of mercury, Analyst 124, 1493.
Dedina, J. Tsalev,D. (1995) Hydride generation Atomic Absorption spectrometry(3rd ed) NewYork :John Wiely and Sons, pp 1-10.
Gallignani, M. Bahsas, H. Brunetto, M. R Burguera M. and Petit de Pena, Y. (1998), FIA technique for on–line sample pretreatment Anal. Chim. Acta 369, 57.
Hempel, M., Chau, Y., Datka, B., Mclnnis, R. and Lin, D. (1995), Flow injection analysis technique for determination of mercury , Analyst 120, 721.
Hatch ,W.R. and Ott, W.L. (1968), Determination of total mercury content of environmental and physiological samples, Anal. Chem.40, 2085.
Issag, H. J. and Zielinski, W. L. (1974) ,Cold vapor atomic absorption spectrometry for determination of mercury, Anal. Chem. 46, 1436
Mizuike, A. (1983) Enrichment Technique for Inorganic Trace Analysis (2nd ed) Berlin: Springer verlag, p33
Mulvaney, T.L. Weller, P. H. (1990) Studied elements such as Cu, Ag, Au, pt, pd, and Ni which do not form volatile hydride J. Am. Chem. Soc. 112 4657 –4664
Panichev, N. and Sturgeon, R. (1998) Anal.Chem.70, 1670-1676.8. Schmid G. (1994) physics and Chemistry of metal cluster compounds (1st ed) Boston: Kluwer Academic puplisher, pp. 107-134.
Tyson, J., West, T.S. (1979) selective absorption of radiation by metal atoms in aqueous solution Talanta, 26, 117-125.
Published
2013-09-30
How to Cite
Shawket, S. (2013). Flow Injection Atomic Absorption Spectrometry in Solution for Determination of Mercury. Science Journal of University of Zakho, 1(2), 735-746. Retrieved from https://sjuoz.uoz.edu.krd/index.php/sjuoz/article/view/384
Section
Science Journal of University of Zakho