Analytical Chemistry
Analytical Chemistry - Related Videos
08:42
Coordination Chemistry Complexes
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2023
Source: Laboratory of Dr. Neal Abrams — SUNY College of Environmental Science and Forestry Transition metals are found everywhere from vitamin supplements to electroplating baths. Transition metals also make up the pigments in many paints and compose all minerals. Typically, transition metals are found in the cationic form since they readily oxidize, or lose electrons, and are surrounded by electron donors called ligands. These ligands do not form ionic or covalent bonds with the metal center,...
05:40
Fabricating Cotton Analytical Devices
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2016
To investigate simple fabrication approaches for multiple assay needs, we created a fluid-absorbing channel system made of cotton material. This device was used to establish a multiple detection platform, and solve contamination issues that commonly affect lateral flow-based biomedical devices, for clinical urinalysis of nitrite, total protein, and urobilinogen.
12:31
Chemoselective Modification of Viral Surfaces via Bioorthogonal Click Chemistry
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Cited by 14 •
2012
Adenovirus particles are engineered to contain either the unnatural amino acid analogue azidohomoalanine or the azido sugar O-GlcNAz. The azide group of each is chemoselectively ligated via "click" chemistry reactions as a means of viral surface modification.
13:35
Structural Biology and Analytical Chemistry Approaches for Characterizing C-Glycoside Metabolic Enzymes in Human Gut Microbiota
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Cited by 1 •
2025
Recent studies highlight the roles of human gut microbiota enzymes in metabolizing C-glycosides. Here, we present a comprehensive methodology integrating analytical chemistry techniques (LC-MS/MS and NMR) with structural biology approaches to systematically characterize the structural and enzymatic reaction chains of these C-glycoside-metabolizing enzymes.
09:14
Synthesis of Protein Bioconjugates via Cysteine-maleimide Chemistry
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Cited by 8 •
2016
This protocol details the important steps required for the bioconjugation of a cysteine containing protein to a maleimide, including reagent purification, reaction conditions, bioconjugate purification and bioconjugate characterization.
FAQs
Qualitative analysis establishes which chemical components are present, whereas quantitative analysis determines how much of each component is present. Keeping these objectives distinct helps investigators select suitable measurements and report results appropriately. A material may therefore require both approaches: identification to establish composition and measurement to assess purity or contaminant levels.
Calibration against known standards connects an instrument's or method's measurement to a chemical amount. The standards provide a reference for interpreting signals or readings, allowing quantities in an unknown sample to be estimated. This step is central to reliable quantitative work because it links observed analytical results with the composition being measured.
Spectroscopy, chromatography, and electrochemical analysis offer complementary routes for analytical work rather than interchangeable answers to every question. The choice depends on whether the main need is to detect components, separate them, quantify them, or combine these goals. Recognizing that distinction helps match a method to the evidence required from a sample.
An analytical chemistry workflow starts with sample preparation, followed by a qualitative or quantitative measurement and calibration against known standards. The selected approach can include spectroscopy, chromatography, or electrochemical analysis. Organizing the work in this sequence helps connect the original material to evidence about its components, amounts, purity, or trace contaminants.
Analytical chemistry supports decisions in pharmaceuticals, environmental monitoring, clinical testing, food science, and forensic investigations. In these settings, measurements can be used for quality control, purity assessment, trace contaminant detection, or characterization of complex samples. The value lies in applying validated methods so results can guide research and industrial decisions.
When a sample contains many chemical components, a single analytical step may not provide all needed information. Sample preparation can be paired with chromatography to detect, separate, and quantify components. This combined approach supports characterization of complex samples and can clarify purity or trace-contaminant findings.