Search
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/10%3A_Spectroscopic_Methods/10.09%3A_ProblemsThe document appears to be focused on various analytical chemistry problems involving spectrophotometry, colorimetry, and molecular absorption techniques in different contexts such as determining conc...The document appears to be focused on various analytical chemistry problems involving spectrophotometry, colorimetry, and molecular absorption techniques in different contexts such as determining concentrations of elements or compounds in different scenarios like solutions, beverages, and solid matrices. The problems cover applications of Beer???s Law, stoichiometry of complex formation, and effects of instrumental limitations.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/15%3A_Quality_Assurance/15.01%3A_The_Analytical_Perspective_RevisitedThe page discusses the analytical approach in chemistry, highlighting the problem-solving process and the importance of feedback loops in improving analytical methods. It emphasizes the role of qualit...The page discusses the analytical approach in chemistry, highlighting the problem-solving process and the importance of feedback loops in improving analytical methods. It emphasizes the role of quality assurance programs in controlling systematic and random errors, ensuring results are unbiased and within defined confidence intervals.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/12%3A_Chromatographic_and_Electrophoretic_Methods/12.09%3A_Additional_ResourcesThe page provides a comprehensive list of experiments and references related to chromatography and electrophoresis. It categorizes experiments into gas chromatography, high-performance liquid chromato...The page provides a comprehensive list of experiments and references related to chromatography and electrophoresis. It categorizes experiments into gas chromatography, high-performance liquid chromatography, ion-exchange chromatography, size-exclusion chromatography, and electrophoresis.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/11%3A_Electrochemical_Methods/11.06%3A_Additional_ResourcesThe page outlines various experiments designed to introduce students to electrochemistry applications. The experiments are organized into categories including general electrochemistry, electrode prepa...The page outlines various experiments designed to introduce students to electrochemistry applications. The experiments are organized into categories including general electrochemistry, electrode preparation, potentiometry, coulometry, voltammetry, and amperometry.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/16%3A_Appendix/16.16%3A_Countercurrent_SeparationsIn 1949, Lyman Craig improved the separation of analytes with similar distribution ratios through countercurrent liquid-liquid extraction, offering a foundational understanding of chromatographic sepa...In 1949, Lyman Craig improved the separation of analytes with similar distribution ratios through countercurrent liquid-liquid extraction, offering a foundational understanding of chromatographic separations. Unlike sequential extractions, countercurrent extraction involves serial extraction of both sample and extracting phases. While outdated due to chromotography's efficiency, it remains instructive theoretically.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Instrumental_Analysis_(LibreTexts)/14%3A_Applications_of_Ultraviolet_Visible_Molecular_Absorption_Spectrometry/14.04%3A_Quantitative_ApplicationsThe determination of an analyte’s concentration based on its absorption of ultraviolet or visible radiation is one of the most common quantitative analytical methods. In addition, if an analyte does n...The determination of an analyte’s concentration based on its absorption of ultraviolet or visible radiation is one of the most common quantitative analytical methods. In addition, if an analyte does not absorb UV/Vis radiation—or if its absorbance is too weak—we often can react it with another species that is strongly absorbing.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Instrumental_Analysis_(LibreTexts)/17%3A_Applications_of_Infrared_SpectrometryInfrared spectroscopy finds wide use for both qualitative and quantitative analysis. Our organization of IR applications follows that traditionally used by others by dividing the broad range of infrar...Infrared spectroscopy finds wide use for both qualitative and quantitative analysis. Our organization of IR applications follows that traditionally used by others by dividing the broad range of infrared radiation into three distinct units: the near-IR, the mid-IR, and the far-IR. Note that the near in near-IR means that it is nearest to the visible range of light. Of these, the most important in terms of the breadth of applications is the mid-IR.
- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/07%3A_Chemical_Nomenclature/7.02%3A_Empirical_FormulaThis page explains empirical formulas in chemistry, focusing on their role in identifying elemental composition. It references Antoine Lavoisier's experiments that contributed to material isolation an...This page explains empirical formulas in chemistry, focusing on their role in identifying elemental composition. It references Antoine Lavoisier's experiments that contributed to material isolation and structure assessment. The page defines empirical formulas as the lowest whole-number ratios of elements in compounds, using glucose (CH2O) as an example.
- https://chem.libretexts.org/Courses/Lakehead_University/Analytical_I/1%3A_Introduction_to_Analytical_Chemistry/1.1%3A_What_is_Analytical_Chemistry%3FAnalytical chemistry is too broad and too active a discipline for us to define completely. This description is misleading. In this chapter we will try to say a little about what analytical chemistry ...Analytical chemistry is too broad and too active a discipline for us to define completely. This description is misleading. In this chapter we will try to say a little about what analytical chemistry is, as well as a little about what analytical chemistry is not. Analytical chemistry is often described as the area of chemistry responsible for characterizing the composition of matter, both qualitatively (Is there any lead in this sample?) and quantitatively (How much lead is in this sample?).
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Instrumental_Analysis_(LibreTexts)/19%3A_Nuclear_Magnetic_Resonance_Spectroscopy/19.03%3A_NMR_SpectrometersEarlier we noted that there are two basic experimental designs for recording a NMR spectrum. One is a continuous-wave instrument in which we scan through the range of frequencies over which the nucleu...Earlier we noted that there are two basic experimental designs for recording a NMR spectrum. One is a continuous-wave instrument in which we scan through the range of frequencies over which the nucleus of interest absorbs, exciting them sequentially. Most instruments use pulses of RF radiation to excite all nuclei at the same time and then use a Fourier transform to recover the signals from the individual nuclei. Our attention in this chapter is limited to instruments for FT-NMR.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Instrumental_Analysis_(LibreTexts)/33%3A_Automated_Methods_of_Analysis/33.03%3A_Other_Automated_Methods_of_AnalysisIn the last two sections we introduced two examples of automated methods of analysis: a brief mention of automated titrators and a more extensive coverage of flow-injection analysis. In this section w...In the last two sections we introduced two examples of automated methods of analysis: a brief mention of automated titrators and a more extensive coverage of flow-injection analysis. In this section we consider three additional examples of automated methods of analysis: the stopped-flow analyzer, the centrifugal analyzer, and disposable single-test analyzers based on thin films, screen-printing, and paper.
