Related Experiment Video
Updated: Jun 28, 2026

Atomic Absorbance Spectroscopy to Measure Intracellular Zinc Pools in Mammalian Cells
Published on: May 16, 2019
Ion-exchanger colorimetry-III microdetermination of zinc in water
K Yoshimura1, H Waki, S Ohashi
1Department of Chemistry, Faculty of Science, Kyushu University 33, Hakozaki, Higashiku, Fukuoka, 812 Japan.
Abstract:
An ion-exchanger colorimetric method for the determination of zinc(II) with Zincon has been developed. Zinc in a water sample can be determined by sorption onto an anion-exchange resin from 2M chloride solution followed by transformation into a coloured complex with Zincon. With use of a 1-litre sample the sensitivity is 10 times greater than that for conventional colorimetry. Most metals, except cadmium(II), lead(II) and bismuth(III), do not interfere when present in up to 100 times the concentration of zinc. The zinc: Zincon ratio of the complex in the resin phase was found to be 1 : 1 by the molar ratio method.
Related Concept Videos
EDTA: Auxiliary Complexing Reagents
Precipitation Titration: Endpoint Detection Methods
In the Volhard method, a standard excess of AgNO3 is first added to the...
Complexometric Titration: Overview
Ion-Exchange Chromatography
Extraction: Advanced Methods
Redox Titration: Iodimetry and Iodometry

