مقایسهٔ روش‌ها

	کُلُم‌سنجی (Coulometry)	کروماتوگرافی یونی	تیتراسیون پتانسیومتری
حوزه	شیمی تجزیه	شیمی تجزیه	شیمی تجزیه
خانواده	Process / pipeline	Process / pipeline	Process / pipeline
سال پیدایش	1945	1975	1909
پدیدآور	James Lingane	Hamish Small	Soren Sorensen
نوع	electrochemical titration	separation and analysis technique	titration method
منبع بنیادین	Lingane, J. J. (1974). Electroanalytical Chemistry (2nd ed.). Interscience Publishers. ISBN: 978-0486409023	Small, H., Stevens, T. S., & Bauman, W. C. (1989). Novel ion exchange chromatographic method using conductometric detection. Analytical Chemistry, 47(11), 1801–1809.	Skoog, D. A., West, D. M., Holler, F. J., & Crouch, S. R. (2014). Fundamentals of Analytical Chemistry (9th ed.). Cengage Learning. ISBN: 978-1133170960
نام‌های دیگر	coulometric titration, electrochemical coulometry, amperes titration	IC, ion-exchange chromatography, IEC	potentiometry, electrochemical titration
مرتبط	5	5	5
خلاصه	Coulometry is an electrochemical analytical method that determines the concentration of an analyte by measuring the total electric charge (in coulombs) required to oxidize or reduce the analyte completely at an electrode. Developed by James J. Lingane in the 1940s, coulometry is highly accurate because it is based on fundamental constants (Faraday's law) and does not require external standards or calibration curves. This method is particularly valuable for trace analysis, water determination, and analysis of reactive species.	Ion chromatography is a liquid chromatography method that separates ions and polar molecules based on their relative affinity for the ion exchange resin in the column. Developed by Hamish Small in 1975, it combines ion-exchange separation with conductivity detection, enabling rapid, sensitive, and simultaneous determination of multiple ions in a single analysis. Ion chromatography has become an indispensable tool for monitoring environmental pollutants, analyzing food and pharmaceutical products, and studying complex ionic mixtures.	Potentiometric titration is an electrochemical method of analysis that measures the potential difference between a reference electrode and an indicator electrode as a titrant is gradually added to a solution. Developed in the early 20th century, it allows precise determination of the concentration of analytes without requiring visual endpoint indicators. This method is fundamental in analytical chemistry for determining acids, bases, redox species, and metal ions.