Before the injection—modern methods of sample preparation for separation techniques

Techniques for extraction of bioactive compounds from plant materials: A review

“…Different techniques, many of them remain almost same through hundreds of years; can also be used to extract bioactive compounds. All these techniques have some common objectives, (a) to extract targeted bioactive compounds from complex plant sample, (b) to increase selectivity of analytical methods (c) to increase sensitivity of bioassay by increasing the concentration of targeted compounds, (d) to convert the bioactive compounds into a more suitable form for detection and separation, and (e) to provide a strong and reproducible method that is independent of variations in the sample matrix (Smith, 2003).…”

“…The qualitative and quantitative studies of bioactive compounds from plant materials mostly rely on the selection of proper extraction method (Smith, 2003;Sasidharan et al, 2011). Extraction is the first step of any medicinal plant study, plays a significant and crucial role on the final result and outcome.…”

“…At the same time conventional extraction methods, such as Soxhlet is still considered as one of the reference method to compare success of newly developed methodology. Substantial number of scientific reports, book chapters and monograms exist where non-conventional methods were extensively reviewed (Jennings and Rapp, 1983;Moldoveanu and David, 2002;Szumski and Buszewski, 2002;Majors, 2003;Smith, 2003;Wang and Weller, 2006). These writings are emphasizing the use of extraction methods in term of nutraceuticals, food additives and many other sectors but lack in herbal plant's bioactive 0260-8774/$ -see front matter Ó 2013 Elsevier Ltd. All rights reserved.…”

Ion Chromatography Applications in Wastewater Analysis

“…The sample preparation procedure is necessary before the ion chromatography analysis so as to protect the analytical columns and obtain reliable and repeatable results [35]. A sample that is not properly prepared can cause increased column back pressures and change their performances.…”

Hollow Fibre Membrane-Protected Molecularly Imprinted Microsolid-Phase Extraction (HFM-Protected-MI-MSPE) of Triazines from Soil Samples

“…Over the last decade, new goals have been established in sample preparation, such as the use of smaller initial samples sizes, improving the selectivity of the extraction process, and minimizing the amount of glassware and organic solvents used [1]. In this regard, the solid-phase micro-extraction technique (SPME) [2], where the analytes are retained in a micro-extraction phase and then desorbed for their analytical determination as concentrated extracts, has undergone huge development.…”