Compara mètodes

	Voltametria	Espectrofotometria UV-Vis
Camp	Química analítica	Química analítica
Família	Process / pipeline	Process / pipeline
Any d'origen	1922	1852
Autor original	Jaroslav Heyrovsky	August Beer
Tipus	electrochemical separation and analysis	absorption measurement technique
Font seminal	Nicholson, R. S., & Shain, I. (1965). Theory of stationary electrode polarography for a chemical reaction coupled to electron transfer. Analytical Chemistry, 36(4), 706–723.	Beer, A. (1852). Bestimmung der Absorption des rothen Lichts in farbigen Flussigkeiten. Annalen der Physik und Chemie, 86(5), 78–88.
Àlies	electrochemical voltammetry, cyclic voltammetry, CV, differential pulse voltammetry	UV-Vis spectroscopy, absorption spectroscopy, colorimetry
Relacionats	5	5
Resum	Voltammetry is an electrochemical analytical technique that studies chemical reactions and properties of substances by measuring the current response as the potential applied to an electrode is systematically varied. Developed by Jaroslav Heyrovsky in the 1920s (polarography), modern voltammetry has become essential for measuring redox potentials, detecting trace analytes, and investigating reaction mechanisms. Variants such as cyclic voltammetry (CV) and differential pulse voltammetry (DPV) offer high sensitivity and selectivity for electrochemically active analytes.	UV-Vis spectrophotometry is an optical analytical technique that measures the absorption of ultraviolet and visible light (wavelengths 190–900 nm) by substances in solution. Founded on the Beer-Lambert law (developed by August Beer and Pierre Bouguer), it is one of the oldest and most widely used quantitative analytical methods. UV-Vis spectrophotometry is economical, rapid, and applicable to a vast range of organic and inorganic compounds, making it indispensable in pharmaceutical, clinical, environmental, and research laboratories.