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By John Kenkel

Advent to Analytical ScienceSampling and pattern PreparationGravimetric AnalysisIntroduction to Titrimetric AnalysisApplications of Titrimetric AnalysisIntroduction to Instrumental AnalysisIntroduction to Spectrochemical MethodsUV-Vis and IR Molecular SpectrometryAtomic SpectroscopyIntroduction to ChromatographyGas ChromatographyHigh-Performance Liquid Chromatography and ElectrophoresisMass Read more...

summary: creation to Analytical ScienceSampling and pattern PreparationGravimetric AnalysisIntroduction to Titrimetric AnalysisApplications of Titrimetric AnalysisIntroduction to Instrumental AnalysisIntroduction to Spectrochemical MethodsUV-Vis and IR Molecular SpectrometryAtomic SpectroscopyIntroduction to ChromatographyGas ChromatographyHigh-Performance Liquid Chromatography and ElectrophoresisMass SpectrometryElectroanalytical MethodsMiscellaneous Instrumental TechniquesAppendix 1: formulation for resolution focus and instruction CalculationsAppendix 2: The Language of caliber insurance and G

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Extra resources for Analytical Chemistry for Technicians, Fourth Edition

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If the label on a bottle of rubbing alcohol says that it is 70% isopropyl alcohol, how does the manufacturer know that it is 70% and not 65% or 75%? The answers have to do to with the quality of the manufacturing process and also with how accurately the companies’ quality assurance laboratories can measure these ingredients. However, much of it also has to do with the skills of the technicians performing the analyses. An analytical laboratory technician is a person with a special mindset and special skills.

The correct answer to an analysis is usually not known in advance. ” There are several items that must be considered to answer this question. First, all instruments and measuring devices must be properly calibrated and functioning properly. Second, the bias, if any, of a method must be determined and accounted for. Third, the method must be valid method for the analysis being performed. In other words, it must be proven that the chosen method does indeed provide the answer that is sought. Fourth, the sample that has been acquired must truly represent the entire bulk system that is under investigation.

Wet chemical analysis usually involves chemical reactions and/or classical reaction stoichiometry, but no electronic instrumentation beyond a weighing device. Wet chemical analysis techniques are classical techniques, meaning they have been in use in analytical laboratory for many years, before electronic devices came on the scene. If executed properly, they have a high degree of inherent accuracy and precision, but they take more time to execute. Instrumental analysis can also involve chemical reactions, but always involves modern sophisticated electronic instrumentation.

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