|
NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.18 [2011] >
IJCT Vol.18(2) [March 2011] >
| Title: | Quantitative assessment of red mud constituents by combined thin layer chromatography and scanning densitometry |
| Authors: | Najar, P A Mohamed
Nimje, M T
Chaddha, M J
Rao, K V Ramana |
| Keywords: | TLC
Separation
Red Mud
Quantitative densitometry |
| Issue Date: | Mar-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Quantitative analysis of aluminium, iron,
silicon and titanium present in bauxite residue (red mud) has been achieved by
thin layer chromatography coupled with optical scanning densitometry. Silicon
in red mud sample is detected at pH range 0.75-0.95 on chromatography plates
prepared with microcrystalline cellulose modified with 10% sodium molybdate.
Aluminium, iron and titanium are detected on silica gel H layers impregnated
with 0.2% sodium formate and developed with mixture of 10% aqueous solutions of
sodium chloride and formic acid in 8:2 v/v. The chromatograms obtained for the
cations are quantitatively evaluated by optical scanning densitometry by
measuring absorbance at 530-520 nm for aluminium, 660-528 nm for iron and
395-410 nm for titanium and silicon in reflectance mode. The quantitative
densitometric data has been evaluated with analogous data obtained by wet
analysis. |
| Page(s): | 99-106 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.18(2) [March 2011]
|
|
