Related Experiment Video
Updated: Aug 19, 2026

Compact Quantum Dots for Single-molecule Imaging
Published on: October 9, 2012
A novel kinetic method for the speciation of cadmium in river water by micro solvent extraction with dithizone
Tokuo Shimizu1, Yoshinori Hiraoka, Miyuki Kikuchi
1Department of Applied Chemistry, Faculty of Engineering, Utsunomiya University, Utsunomiya 321-8585, Japan. shimizut@cc.utsunomiya-u.ac.jp
Abstract:
Cadmium species in river water were kinetically extracted with dithizone by varying the extraction time. The obtained extraction curve showed a three-stage stepwise profile that reflected the rate of the ligand substitution reaction between the dithizone and cadmium species. Corresponding to each stage, we divided these extracted cadmium species into three groups: "highly labile", "moderately labile" and "slowly labile" species.
Related Concept Videos
Extraction: Advanced Methods
Voltammetry: Stripping Methods
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...

