Abstract. Accurate lidar-based measurements of cloud optical extinction, even though perhaps limited to the base region, are useful. Arguably, more advanced lidar techniques (e.g. Raman) should be applied for this purpose. However, simpler polarisation and backscatter lidars offer a number practical advantages better resolution continuous numerous time series). In paper, we present signal inver...

This review considers some of the difficulties encountered with the analysis of ionised bases using reversed-phase chromatography, such as detrimental interaction with column silanol groups, and overloading which both lead to poor peak shapes. Methods of overcoming these problems in reversed-phase (RP) separations, by judicious selection of the column and mobile phase conditions, are discussed....

A method for the separation and quantitative estimation of ethanolamine, dimethyl ethanolamine, and monomethyl ethanolamine derived from lipids is described. After acid hydrolysis of the lipids, the bases are extracted from the neutralized hydrolysate with t-butonol and separated by gas-liquid chromatography.

Suppositories are important tools for individual therapy, especially in paediatrics, and an instrumental assay method has become necessary for the quality control of dosage units. The aim of this work was to develop a rapid, effective high-performance liquid chromatography method to assay aminophenazone in extemporaneous suppositories prepared with two different suppository bases, adeps solidus...