Analytical Studies on Food Preservatives by Thin Layer Chromatography

Unidimensional Thin Layer Chromatography of Salicylic Acid Derivatives on Boric Acid-Impregnated Plates in Drugs Studies

A unidimensional Thin Layer Chromatography system for the separation of salicylic acid and its derivatives (sulfosalicylic acid and Aspirin) has been developed. The separation was successfully using a solvent system of chloroform-methanol-water-ammonium hydroxide 120:75:6:2 (V/V) as mobile phase on TLC plates impregnated with boric acid. The method is based on different behavior of investigated...

Simultaneous Determination of Loratadine and Preservatives in Syrups by Thin-layer Chromatography

Simple, rapid, and precise densitometric TLC methods have been established for simultaneous determination of loratadine and preservatives in loratadine–sodium benzoate and loratadine–methylparaben–propylparaben mixtures. Chromatography was performed on aluminium plates precoated with silica gel 60 F254. The mobile phases were n-butyl acetate–carbon tetrachloride–acetic acid–acetonitrile 3:6:0.2...

Thin-Layer (Planar) Chromatography

phy 665: 243. Junk GA, Richard JJ, Grieser MD et al. (1974) Use of Macroreticular resins in the analysis of water for trace organic contaminants. Journal of Chromatography 99: 745. Puig D and BarceloH D (1995) Off-line and on-line solidphase extraction followed by liquid chromatography for the determination of priority phenols in natural waters. Chromatographia 40: 435. Puig D and BarceloH D (1...

Thin-Layer (Planar) Chromatography

Synthetic dyes comprise a large group of organic, organic salt and organometallic compounds which number in the thousands. Most individual dyes are assigned colour index (CI) numbers which helps to identify structure and properties as well as identity where a series of names have been used by the manufacturers for the same dye. Pigments are also listed and can be either organic or inorganic in ...

Thin-layer chromatography.