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Analytical chemistry consists of classical, wet chemical methods and modern, instrumental methods. [2] Classical qualitative methods use separations such as precipitation, extraction, and distillation. Identification may be based on differences in color, odor, melting point, boiling point, solubility, radioactivity or reactivity.
The most common mode of liquid chromatography is reversed phase, whereby the mobile phases used, include any miscible combination of water or buffers with various organic solvents (the most common are acetonitrile and methanol). Some HPLC techniques use water-free mobile phases (see normal-phase chromatography below).
Polymer characterization is the analytical branch of polymer science. The discipline is concerned with the characterization of polymeric materials on a variety of levels. The characterization typically has as a goal to improve the performance of the material. As such, many characterization techniques should ideally be linked to the desirable ...
Analytical technique. Analytical technique is a method used to determine a chemical or physical property of a chemical substance, chemical element, or mixture. [1] There is a wide variety of techniques used for analysis, from simple weighing to advanced techniques using highly specialized instrumentation.
A separatory funnel used for liquid–liquid extraction, as evident by the two immiscible liquids.. Liquid–liquid extraction, also known as solvent extraction and partitioning, is a method to separate compounds or metal complexes, based on their relative solubilities in two different immiscible liquids, usually water (polar) and an organic solvent (non-polar).
Chemistry portal. Analytical Methods is a monthly peer-reviewed scientific journal covering research on the development of analytical techniques. It is published by the Royal Society of Chemistry and the editor-in-chief is Scott Martin (Saint Louis University).
Potentiostatic coulometry utilizes a constant electric potential and is a technique most commonly referred to as "bulk electrolysis".Also called direct coulometry, the analyte is oxidized or reduced at the working electrode without intermediate reactions. [3]
Matrix (chemical analysis) In chemical analysis, matrix refers to the components of a sample other than the analyte [1] of interest. The matrix can have a considerable effect on the way the analysis is conducted and the quality of the results are obtained; such effects are called matrix effects. [2] For example, the ionic strength of the ...