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).There are a very large number of Techniques used in chemical analysis .
information content of the data generated by the analysis: • single-channel techniques will generate but a single number for each analysis of the sample. Examples include gravimetric and potentiometric analysis. In the former, the signal is a single mass measurement (e.g., mass of the precipitate) and in the latter method the signal is a single
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