Published:Journal of Chromatographic Science,
ISSN 0021-9665Volume
40, Number 5, May/June 2002, pp. 297-303
Plain and Ion-Pair Thin-Layer Chromatography of Synthetic Dyes
on an Admixture of Silica Gel G and Barium Sulfate in an Aqueous Ethanol System
Aditya K. Misra* and Upasana
Gupta
Department of Chemistry, NMSN Dass (PG) College, Budaun–243601, U.P., India
An easy, inexpensive, and accurate method for the analysis of
synthetic dyes by means of ion-pair thin-layer chromatography (IPTLC) on mixed
sorbent phases containing silica gel G and barium sulfate in an aqueous ethanol
system is studied. The effect of the composition of the sorbent phases has a
major effect on the hundred-fold relative migration rate, as also does the effect
of the ion-pairing reagent as the impregnant. Compact and sharp spot application
yields very good binary and ternary separations and enables their clear identification.
IPTLC has better separations on mixed sorbent phases, which are not possible
on plain mixed phases in thin-layer chromatography. The method can be applied
for the trace analysis of synthetic dyes in various natural and synthetic samples.
Reproduction
of editorial content of this journal is prohibited without publisher’s
permission.
This
article is available in its entirety by fax for $4.00 per
page.
Visa or MasterCard accepted.
To
order electronicallyclick here or call: 847-647-2900 ext. 1323 or fax request to: 847-647-1155.
Please
indicate JCS volume and issue along with
page numbers.
