High-performance liquid chromatography phase-appropriate methods

High-performance liquid chromatography (HPLC) This method was applied to identify and quantify characteristic substances in commercially available oakmoss products. This technique provides a powerful complement to the established TLC method. The bonded reverse phase columns are used here, and all the aromatic lichen products are suitable for analysis with this method. Samples are dissolved in methanol and injected in to the appropriate portion column, through which an... 

B. Phase-Appropriate High-Performance Liquid Chromatography Methods... 

Several high-performance liquid chromatography (HPLC) separation techniques have been used in combination with different detection methods to characterize poly(ethylene glycol)s and their amphiphilic derivatives. SEC is a particularly attractive analytical tool for the investigation of non-ionic surfactants because it can provide information for their composition, molecular weight, and molecular-weight distribution along with their micellization in selective solvents. This entry wiU survey briefly both applications with major emphasis on the choice of the most appropriate eluent and stationary phase. 

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