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- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/03%3A__The_Vocabulary_of_Analytical_Chemistry/3.08%3A_ProblemsThe page discusses various analytical chemistry processes related to sample preparation and analysis. It outlines methods for digesting solid samples, methods for concentration determination, and cons...The page discusses various analytical chemistry processes related to sample preparation and analysis. It outlines methods for digesting solid samples, methods for concentration determination, and considerations when interferents are present. It also addresses evaluating sensitivity, selectivity, and method suitability for different analytes and interferents. Examples include analyzing calcium in water with zinc interference and determining reduced glutathione in blood.
- https://chem.libretexts.org/Courses/Los_Angeles_Trade_Technical_College/Analytical_Chemistry/2%3A_Analytical_Chemistry_2.0_(Harvey)/04%3A_The_Vocabulary_of_Analytical_Chemistry/4.4%3A_Selecting_an_Analytical_MethodA method is the application of a technique to a specific analyte in a specific matrix. We can develop an analytical method for determining the concentration of lead in drinking water using any of the ...A method is the application of a technique to a specific analyte in a specific matrix. We can develop an analytical method for determining the concentration of lead in drinking water using any of the techniques mentioned in the previous section. The requirements of the analysis determine the best method and consideration is given the following criteria: accuracy, precision, sensitivity, selectivity, robustness, ruggedness, scale of operation, analysis time, availability of equipment, and cost.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/03%3A__The_Vocabulary_of_Analytical_Chemistry/3.10%3A_Chapter_Summary_and_Key_TermsThe chapter emphasizes the importance of mastering the vocabulary specific to analytical chemistry, differentiating terms such as analyte, matrix, technique, method, procedure, and protocol. It discus...The chapter emphasizes the importance of mastering the vocabulary specific to analytical chemistry, differentiating terms such as analyte, matrix, technique, method, procedure, and protocol. It discusses key criteria for selecting analytical methods, including accuracy, precision, sensitivity, and more, highlighting the need to balance these interdependent factors.
- https://chem.libretexts.org/Courses/Los_Angeles_Trade_Technical_College/Analytical_Chemistry/2%3A_Analytical_Chemistry_2.0_(Harvey)/08%3A_Collecting_and_Preparing_Samples/8.04%3A_Separating_the_Analyte_from_InterferentsWhen an analytical method is selective for the analyte, analyzing samples is a relatively simple task. For example, a quantitative analysis for glucose in honey is relatively easy to accomplish if the...When an analytical method is selective for the analyte, analyzing samples is a relatively simple task. For example, a quantitative analysis for glucose in honey is relatively easy to accomplish if the method is selective for glucose, even in the presence of other reducing sugars, such as fructose. Unfortunately, few analytical methods are selective toward a single species.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/07%3A_Obtaining_and_Preparing_Samples_for_Analysis/7.05%3A_General_Theory_of_Separation_EffiiciencyThe page explains the process of analytical separation, which aims to isolate an analyte or remove an interferent from a sample matrix. A distinction is made between the chemical or physical propertie...The page explains the process of analytical separation, which aims to isolate an analyte or remove an interferent from a sample matrix. A distinction is made between the chemical or physical properties of these components to achieve separation. Key concepts include the analyte's and interferent's recoveries, defined by specific equations, and the separation factor.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/12%3A_Chromatographic_and_Electrophoretic_Methods/12.06%3A_Other_Forms_of_ChromatographyThe text covers various liquid chromatography techniques, focusing on liquid-solid adsorption, ion-exchange, and size-exclusion chromatography. Liquid-solid chromatography involves polar stationary ph...The text covers various liquid chromatography techniques, focusing on liquid-solid adsorption, ion-exchange, and size-exclusion chromatography. Liquid-solid chromatography involves polar stationary phases and nonpolar solvents for separating compounds, excelling in analyzing isomers. Ion-exchange chromatography uses resin beads with ionic functional groups to separate ions based on their affinity for the exchange sites, utilizing gradient elutions to affect solute retention.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Instrumental_Analysis_(LibreTexts)/23%3A_Potentiometry/23.03%3A_Membrane_Indicator_ElectrodesIf metals were the only useful materials for constructing indicator electrodes, then there would be few useful applications of potentiometry. In 1906, Cremer discovered that the potential difference a...If metals were the only useful materials for constructing indicator electrodes, then there would be few useful applications of potentiometry. In 1906, Cremer discovered that the potential difference across a thin glass membrane is a function of pH when opposite sides of the membrane are in contact with solutions that have different concentrations of H+. The existence of this membrane potential led to the development of a new class of indicator electrodes, which we call ion-selective electrodes.
- https://chem.libretexts.org/Courses/Lakehead_University/Analytical_I/3%3A_The_Vocabulary_of_Analytical_Chemistry/3.4%3A_Selecting_an_Analytical_MethodA method is the application of a technique to a specific analyte in a specific matrix. We can develop an analytical method for determining the concentration of lead in drinking water using any of the ...A method is the application of a technique to a specific analyte in a specific matrix. We can develop an analytical method for determining the concentration of lead in drinking water using any of the techniques mentioned in the previous section. The requirements of the analysis determine the best method and consideration is given the following criteria: accuracy, precision, sensitivity, selectivity, robustness, ruggedness, scale of operation, analysis time, availability of equipment, and cost.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/07%3A_Obtaining_and_Preparing_Samples_for_Analysis/7.04%3A_Separating_the_Analyte_From_InterferentsThe text discusses the complexity of quantitative analysis when dealing with analytes and interferents in a sample. It describes a method's selectivity based on its sensitivity to the analyte versus t...The text discusses the complexity of quantitative analysis when dealing with analytes and interferents in a sample. It describes a method's selectivity based on its sensitivity to the analyte versus the interferent, using specific equations. It highlights the selectivity coefficient as a crucial factor in characterizing method selectivity, emphasizing the need to account for an interferent???s contribution under certain conditions for accurate analysis.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/07%3A_Obtaining_and_Preparing_Samples_for_Analysis/7.09%3A_ProblemsThe document addresses various analytical chemistry problems and exercises related to sampling, dissolution techniques, variance analysis, and liquid-liquid extraction efficiencies. It covers topics s...The document addresses various analytical chemistry problems and exercises related to sampling, dissolution techniques, variance analysis, and liquid-liquid extraction efficiencies. It covers topics such as monitoring environmental samples, error calculation, and comparing digestion methods. The document is instructional, prompting the reader to analyze given data, calculate specific values, and develop sampling strategies.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/03%3A__The_Vocabulary_of_Analytical_Chemistry/3.04%3A_Selecting_an_Analytical_MethodThe page discusses the criteria for selecting analytical methods for determining analyte concentrations, using lead in drinking water as an example. It explains different methods' principles, like gra...The page discusses the criteria for selecting analytical methods for determining analyte concentrations, using lead in drinking water as an example. It explains different methods' principles, like gravimetric methods, complexation titrimetry, and atomic absorption spectroscopy, and the importance of factors like accuracy, precision, sensitivity, selectivity, robustness, and scale of operation.
