The branch of chemistry concerned with identifying substances in a sample and measuring their quantities or concentrations. A bicinchoninic acid assay, for example, estimates protein content through an optical measurement.
An assay that estimates protein concentration from a colour-producing chemical reaction, measured by absorbance and compared with known protein reference samples. Bovine serum albumin is commonly used as the reference protein. The readout estimates protein content rather than identifying each protein in a mixture.
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Analytical chemistry is a branch of chemistry focused on the qualitative and quantitative analysis of substances to understand their composition, structure, and properties. It involves a variety of techniques and methods to separate, identify, and quantify matter. Key aspects of analytical chemistry include: 1. **Qualitative Analysis**: Determining what substances are present in a sample. This involves identifying the chemical components or compounds without necessarily measuring their concentrations.
