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- https://chem.libretexts.org/Courses/Lakehead_University/Analytical_I/7%3A_Gravimetric_Methods/7.1%3A_Overview_of_Gravimetric_MethodsBefore we consider specific gravimetric methods, let’s take a moment to develop a broad survey of gravimetry. Later, as you read through the descriptions of specific gravimetric methods, this survey w...Before we consider specific gravimetric methods, let’s take a moment to develop a broad survey of gravimetry. Later, as you read through the descriptions of specific gravimetric methods, this survey will help you focus on their similarities instead of their differences. You will find that it is easier to understand a new analytical method when you can see its relationship to other similar methods.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Instrumental_Analysis_(LibreTexts)/22%3A_An_Introduction_to_Electroanalytical_ChemistryThe simplest division of electrochemical techniques is between bulk techniques, in which we measure a property of the solution in the electrochemical cell, and interfacial techniques, in which the pot...The simplest division of electrochemical techniques is between bulk techniques, in which we measure a property of the solution in the electrochemical cell, and interfacial techniques, in which the potential, current, or charge depends on the species present at the interface between an electrode and the solution in which it sits.
- https://chem.libretexts.org/Courses/Los_Angeles_Trade_Technical_College/Analytical_Chemistry/2%3A_Analytical_Chemistry_2.0_(Harvey)/14%3A_Kinetic_Methods/14.1%3A_Kinetic_Methods_Versus_Equilibrium_MethodsIn an equilibrium method the analytical signal is determined by an equilibrium reaction involving the analyte or by a steady-state process that maintains the analyte’s concentration. In a kinetic meth...In an equilibrium method the analytical signal is determined by an equilibrium reaction involving the analyte or by a steady-state process that maintains the analyte’s concentration. In a kinetic method the analytical signal is determined by the rate of a reaction involving the analyte, or by a nonsteady-state process. As a result, the analyte’s concentration changes during the time in which we are monitoring the signal.
- https://chem.libretexts.org/Courses/Los_Angeles_Trade_Technical_College/Analytical_Chemistry/2%3A_Analytical_Chemistry_2.0_(Harvey)/09%3A_Gravimetric_Methods/9.1%3A_Overview_of_Gravimetric_MethodsBefore we consider specific gravimetric methods, let’s take a moment to develop a broad survey of gravimetry. Later, as you read through the descriptions of specific gravimetric methods, this survey w...Before we consider specific gravimetric methods, let’s take a moment to develop a broad survey of gravimetry. Later, as you read through the descriptions of specific gravimetric methods, this survey will help you focus on their similarities instead of their differences. You will find that it is easier to understand a new analytical method when you can see its relationship to other similar methods.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/15%3A_Quality_Assurance/15.02%3A_Quality_ControlQuality control in laboratories involves activities that ensure analyses are in statistical control, primarily through written directives that guide various operations. Good laboratory practices (GLPs...Quality control in laboratories involves activities that ensure analyses are in statistical control, primarily through written directives that guide various operations. Good laboratory practices (GLPs) outline general operations such as data recording, reagent preparation, and equipment maintenance. Good measurement practices (GMPs) focus on equipment use and calibration specific to techniques. Standard operations procedures (SOPs) provide detailed instructions for analyzing specific analytes.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/13%3A_Kinetic_Methods/13.01%3A_Kinetic_Techniques_versus__Equilibrium_TechniquesThe text discusses equilibrium and kinetic methods used in analytical chemistry. Equilibrium methods focus on the steady-state concentration of an analyte, as seen in the determination of iron in wate...The text discusses equilibrium and kinetic methods used in analytical chemistry. Equilibrium methods focus on the steady-state concentration of an analyte, as seen in the determination of iron in water and metal concentrations in tissue samples. Kinetic methods, on the other hand, rely on the rate of a reaction, allowing for dynamic analysis, such as measuring nitrite concentrations during a development period to obtain rate-based data.
- https://chem.libretexts.org/Courses/Los_Angeles_Trade_Technical_College/Analytical_Chemistry/2%3A_Analytical_Chemistry_2.0_(Harvey)/13%3A_Chromatographic/13.5%3A_High-Performance_Liquid_ChromatographyIn high-performance liquid chromatography (HPLC) we inject the sample, which is in solution form, into a liquid mobile phase. The mobile phase carries the sample through a packed or capillary column t...In high-performance liquid chromatography (HPLC) we inject the sample, which is in solution form, into a liquid mobile phase. The mobile phase carries the sample through a packed or capillary column that separates the sample’s components based on their ability to partition between the mobile phase and the stationary phase.
