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Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.12 [2005] >
IJCT Vol.12(6) [November 2005] >
| Title: | Simultaneous determination of titanium and molybdenum in alloy steels using derivative spectrophotometry in neutral micellar medium |
| Authors: | Khadar, A M A
Varghese, Anitha |
| Keywords: | Titanium
molybdenum
derivative spectrophotometry
micellar medium
salicylaldehyde p-hydroxybenzoylhydrazone |
| Issue Date: | Nov-2005 |
| Publisher: | CSIR |
| IPC Code: | G01J3/00; C22B34/00 |
| Abstract: | A simple,
selective and sensitive spectrophotometric method has been developed for the
individual and simultaneous determination of Ti(IV) and Mo(VI) using
salicylaldehyde p-hydroxybenzoylhydrazone
(SAPHBH) in presence of Triton X-100,
without any prior separation. Beer’s law is obeyed between 0.15-2.0 and
0.20-2.51  gmL-1 concentration of
Ti(IV) and Mo(VI) at 470 and 410 nm, respectively. The molar absorptivity and
Sandell’s sensitivity of the coloured species at pH 2.6 are 2.0  104 and 3.5 104
Lmol-1cm-1 and 2.5 and 2.7 ng cm-2 for
Ti(IV) and Mo(VI), respectively. The stoichiometry of the complexes were found to be 1:2 and 1:1 (metal :
ligand) for Ti(IV) and Mo(VI), respectively.
These metal ions interfere with the determination of each other in zero
order spectrophotometry. The first derivative spectra of these complexes
permitted a simultaneous determination of Ti(IV) and Mo(VI) at zero crossing
wavelengths of 520 and 440 nm, respectively. The optimum conditions for maximum
colour development and other analytical parameters were evaluated. The proposed
method has been successfully applied for the determination of titanium and
molybdenum in standard alloy steel and mineral samples. |
| Page(s): | 701-707 |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.12(6) [November 2005]
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