Quantitative ion-exchange TLC ofp-hydroxybenzoic acid in the presence of preservatives

Autor:	Afshin Mirzaie, Ahmad Jamshidi, Syed Waqif Husain
Rok vydání:	2007
Předmět:	Hydroxybenzoic acid Chromatography Potassium sorbate Clinical Biochemistry Biochemistry Analytical Chemistry chemistry.chemical_compound chemistry Hydroxybenzoate Sodium benzoate Butylated hydroxytoluene Butylated hydroxyanisole Sorbic acid Benzoic acid
Zdroj:	Journal of Planar Chromatography – Modern TLC. 20:303-306
ISSN:	1789-0993 0933-4173
DOI:	10.1556/jpc.20.2007.4.12
Popis:	Rapid separation of p -hydroxybenzoic acid from methyl p -hydroxybenzoate, ethyl p -hydroxybenzoate, propyl p -hydroxybenzoate, benzoic acid, sodium benzoate, sorbic acid, potassium sorbate, salicylic acid, butylated hydroxyanisole, and butylated hydroxytoluene has been achieved by TLC on the inorganic ion-exchanger stannic silicate with n -hexane-ethyl methyl ketone-acetic acid, 8:2:0.3 ( v/v ), as mobile phase. The development distance was 1 cm and the development time 28 min. Quantitative analysis of the separated p -hydroxybenzoic acid was performed by scanning densitometry at 270 nm. The limits of detection (LOD) and quantitation (LOQ) for p -hydroxybenzoic acid were 0.05 and 0.51 μg per zone, respectively.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9e771c51537f628a73569d196e11bbd8 https://doi.org/10.1556/jpc.20.2007.4.12 Zobrazit plný text záznamu Full text from SpringerLink