Copper ion content determination is commonly used in water quality, soil, food, feed, biological samples, alloy leachates, electroplating wastewater, and related systems. Chromogenic methods are suitable for rapid routine laboratory determination of copper content. However, different chromogenic ...
Azo dye-type indicators refer to a class of organic color-developing reagents that contain an azo bond (—N=N—) in the molecule and can produce color responses through changes in acid-base state, metal complexation, protein binding, or affinity for tissue components.