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Only the zinc-cyanide complex dissociates, providing high selectivity for the measurement of zinc.
All metal components form complexes with cyanide. Then, by adding cyclohexanone, only the zinc complex is dissociated, and the free zinc reacts with the Zincon reagent. This reaction produces a color change, and by measuring the intensity of the color, the zinc concentration is quantified.
Continuous measurement of nickel concentration in water is possible!
Method - Colorimetric Analysis After adding the sample to the measurement cell, several reagents are added to adjust the solution to the desired conditions (pH, valence elements, etc.). Next, a blank measurement is performed to correct for the effects of temperature and turbidity. After that, the final reagent is added, which reacts with the solution to produce a color, and this color is measured at the appropriate wavelength. Depending on the photometer used, results can be obtained with high accuracy. Measurement Principle All metal components form cyanide complexes, and by adding cyclohexanone, the zinc complex dissociates, allowing zinc to react with the zincon dye.
