Measuring the interaction between electromagnetic radiation and matter. This includes techniques like UV-Vis, Infrared (IR), and Atomic Absorption spectroscopy.
Measuring electrical properties such as voltage (potentiometry) or current (amperometry) to determine chemical concentrations. 4. Data Evaluation and Quality
Measuring the volume of a solution of known concentration (titrant) required to react completely with the analyte. 3. Instrumental Methods
The field follows a systematic approach to problem-solving. This process begins with , which involves selecting a representative portion of the material to be analyzed. This is followed by sample preparation , where the analyte (the substance being measured) is converted into a form suitable for measurement—often involving dissolution, filtration, or chemical separation to remove interferences. Once prepared, the sample undergoes measurement using specialized techniques, and the resulting data is interpreted through statistical analysis to ensure accuracy and precision. 2. Classical Methods
Historically, analytical chemistry relied on "wet chemical" methods. These remain fundamental today:
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