Modified spray for the detection of phospholipids on thin-layer chromatograms.

Spray detection of phospholipids on thin-layer chromatograms.

A new spray reagent with copper, ammonium molybdate, and sulphuric acid for the detection of phospholipids on thin-layer chromatograms is described. The specificity and sensitivity of the spray reagent is also shown.

A Simple, Specific Spray for the Detection of Phospholipids on Thin-layer Chromatograms.

Ferric chloride spray detector for cholesterol and cholesteryl esters on thin-layer chromatograms.

The use of a stable solution of ferric chloride for the detection of cholesterol and cholesteryl esters on thin-layer chromatographic layers is described. Its advantages over the commonly used Carr-Price reagent are listed, and the levels of sensitivity for the new reagent are shown. Detection of other lipid classes is also possible.

Modification of the Dittmer-Lester reagent for the detection of phospholipid derivatives on thin-layer chromatograms.

A simple modification of the Dittmer-Lester reagent is described that allow the detection of phospholipid derivatives at very low concentrations on silica gel and reversed-phase thin-layer plates. This modification, which involves the addition of acetic acid to the mixture, permits the observation of sharp blue spots on a white background. The specificity and sensitivity of the spray are discus...

A modified procedure for evaluation of the lecithin-sphingomyelin ratio in amniotic fluid.

We describe several modifications of the procedure originated by Gluck et al. [Amer. J. Obstet. Gynecol. 109, 440 (1971)] for evaluation of amniotic fluid lecithin/sphingomyelin (L/S) ratios. The acetone-precipitation step is eliminated, resulting in a faster extraction procedure and higher concentrations of phospholipids. For faster thin-layer chromatography, we use silica gel-impregnated shee...