Micellar Flow Injection Spectrophotometric Determination of Indium and its Application to the Environmental Samples

  • NAJMA MEMON Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan
  • M. J. AHMED Laboratory of Analytical Chemistry, Department of Chemistry, University of Chitagong, Chitagong, Bangladesh
  • M. I. BHANGER Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan

Abstract

A selective and fairly sensitive automatic spectrophotometric method for the determination of indium by flow injection analysis (FIA) has been developed. Anionic micellar medium of sodium dodecyl sulfate has been used for the system Indium reacts with 1,5-diphenylthiocarbazone (dithizone) at pH 7.00 in micellar medium, to give red-violet chelate, which absorb at 530 nm. The molar absorpitivity and Sandell’s sensitivity were found to be 6.7103 l mol-1 cm-1 and 20 ng cm2of indium, respectively. Linear calibration graph was obtained for 0.25 to 6.0 g ml-1 of indium. The reaction is instantaneous and absorbance remain stable for 45 h. Various analytical parameters, such as effect of pH, flow rate, sample volume, dispersion coefficient, time and reagent concentration were studied. The interference of over 40 anions, cations and complexing agents has been studied at 1 g ml-1. Method has been applied to determine indium in synthetic mixture and water samples.

Published
Jun 1, 2005
How to Cite
MEMON, NAJMA; AHMED, M. J.; BHANGER, M. I.. Micellar Flow Injection Spectrophotometric Determination of Indium and its Application to the Environmental Samples. Pakistan Journal of Analytical & Environmental Chemistry, [S.l.], v. 6, n. 1, p. 6, june 2005. ISSN 2221-5255. Available at: <http://pjaec.pk/index.php/pjaec/article/view/92>. Date accessed: 21 feb. 2018.