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Updated: Feb 3, 2026
07:16
Biochemical Titration of Glycogen In vitro
Published on: November 24, 2013
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Towards Green Titration: Batchwise Titration with Reusable Solid Sorbed Indicators
Miki Kanna1, Sarawut Somnam1, Wasin Wongwilai2,3
1Department of Chemistry, Faculty of Science, Chiang Mai University.
Summary
Reusable solid-supported indicators were developed for greener acid-base titrations, reducing chemical waste. These novel materials were successfully applied to analyze real-world samples like vinegar and fruit juice.
Area of Science:
- Analytical Chemistry
- Green Chemistry
Background:
- Traditional acid-base titrations often involve significant chemical usage and waste generation.
- Developing sustainable analytical methods is crucial for environmental protection and resource conservation.
Purpose of the Study:
- To create reusable indicator-sorbed solids for green analytical chemistry applications.
- To reduce chemical consumption in acid-base titrations through solid-supported indicators.
Main Methods:
- Sorption of indicators (phenolphthalein, thymol blue, butterfly pea flower extract) onto solid supports (anion-exchange resins, kaolin).
- Application of these indicator-sorbed solids in acid-base titrations in aqueous and aqueous-organic phases.
- Testing the developed methods on real samples including vinegar, colored fruit juice, and vegetable oil.
Main Results:
- Successfully developed reusable indicator-sorbed solids.
- Demonstrated the efficacy of these solids in acid-base titrations across different phases.
- Validated the application of the developed techniques on diverse real-world samples.
Conclusions:
- Reusable indicator-sorbed solids offer a promising approach for greener analytical chemistry.
- The developed methods effectively reduce chemical waste in acid-base titrations.
- Solid-supported indicators are viable for analyzing complex real samples.
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