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Updated: Aug 7, 2026
06:36
Preparation of Expanded Chitin Foams and their Use in the Removal of Aqueous Copper
Published on: February 27, 2021
Determination of chitosan by cathodic stripping voltammetry
Guanghan Lu1, Lirong Wang, Ruixia Wang
1College of Chemistry, Central China Normal University, Wuhan, P. R. China. ghlu@ccnu.edu.cn
Summary
A new cathodic stripping voltammetry method accurately determines chitosan (CTS) concentration. This sensitive technique offers a low detection limit for CTS analysis in various samples.
Area of Science:
- Electrochemistry
- Analytical Chemistry
- Materials Science
Background:
- Chitosan (CTS) is a versatile biopolymer with numerous applications.
- Accurate and sensitive methods for CTS determination are crucial for quality control and research.
- Existing analytical techniques may lack the required sensitivity or specificity for certain CTS analyses.
Purpose of the Study:
- To develop a sensitive and reliable method for quantifying chitosan (CTS).
- To explore the electrochemical behavior of CTS using cathodic stripping voltammetry.
- To validate the method's applicability for CTS determination in real-world samples.
Main Methods:
- Cathodic stripping voltammetry was employed for CTS detection.
- A potassium hydrogenphthalate buffer solution (pH 2.5) was used as the supporting electrolyte.
- Oxidation-reduction peaks of CTS at -0.62 V and -0.54 V (vs. SCE) were analyzed.
Main Results:
- A linear relationship was observed between peak current and CTS concentration (5.0 x 10(-7) to 1.5 x 10(-5) g ml(-1)).
- The method achieved a low detection limit of 1.0 x 10(-7) g ml(-1) for CTS.
- Electrode reaction characteristics indicated a diffusion-controlled process.
Conclusions:
- The developed cathodic stripping voltammetry method is highly sensitive for chitosan determination.
- The method demonstrates good linearity and a low detection limit, suitable for quantitative analysis.
- The technique proved effective for analyzing chitosan content in real samples.
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