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 | Zendy

Ajay Misra | Zendy; Upma Gupta | Zendy; John J. Langenfeld | Zendy

Open Access

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

Author(s) -

Ajay Misra,

Upma Gupta,

John J. Langenfeld

Publication year - 2002

Publication title -

journal of chromatographic science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.362

H-Index - 56

eISSN - 1945-239X

pISSN - 0021-9665

DOI - 10.1093/chromsci/40.5.297

Subject(s) - chemistry , sorbent , silica gel , chromatography , reagent , aqueous solution , thin layer chromatography , barium , ternary operation , adsorption , inorganic chemistry , organic chemistry , computer science , programming language

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.

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