✍ Scribed by W.J. Khazal; J. Vejrosta; J. Novák
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
Journal of High Resolution Chromatography layer was evaporated till 1 ml and cleaned up over a deactivated aluminum oxide column. After elution with hexane, 1 p1 of the organic Phase was injected (split ratio 1 : 20) onto a 50 m 0.32 mm i.d. CP-Si1 19CB column (df = 0.12 ym)l).
An extraction method for the determination of liquid loadings in chromatographic packings is described in detail, and the various causes that could invalidate the results are pointed out. The extraction time and precision of the results were examined for both single and homogeneously mixed liquids o
Water has been extracted from ascorbic acid into a dry mixture of equal volumes of methanol-organic solvents (n-propanol, ethylene glycol or propylene carbonate) and was determined potentiometrically, using the calibration graph based on the large and systematic change in cell potential for addition
The simultaneous determmatlon of theophylhne and paraxanthme m urine samples by the H-pomt standard additions method (HPSAM) IS described Samples are extracted with Cl, solid-phase extraction cartndges and chromatographed using a Hypersd Cl,-ODS column and a mobile phase conslstmg of acetomtnle-phos