Transcription of Classification of Analytical Techniques
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Classification of Analytical Techniques
Introduction to Instrumental AnalysisClassification of Analytical TechniquesIntroductionIn quantitative chemical analysis , a sample is prepared and then analyzed to determine theconcentration of one (or more) of its components. The following figure gives a general overviewof this or instrumentalsingle- or multi-channelrelative or absoluteFigure 1: Schematic showing measurement steps involved in quantitative chemical analysis of asample. There are three ways of classifying the process, based on the technique (classical vsinstrumental), the measurement data (single-channel vs multi-channel), or on whether additionaldata is needed to estimate the analyte concentration (relative vs absolute).
and precise, and more suitable for the analysis of the major constituents of a chemical sample. In addition, the cost of many analytical instruments can be quite high. Instrumental analysis can be further classified according to the principles by which the measurement signal is generated. A few of the methods are listed below. [The underlined
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