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Related Experiment Video

Updated: Jun 28, 2026

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
12:33

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

Published on: November 15, 2013

[Not Available].

D Baylocq1, W Kayata, F Pellerin

  • 1Laboratoire de Chimie Analytique, Faculté de Pharmacie de l'Université Paris Sud, 1 Rue J. B. Clément, 92296 Chatenay-Malabry, France.

Talanta
|May 1, 1987
PubMed
Summary
This summary is machine-generated.

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A new method allows the direct titration of weak acids like theobromine and theophylline. This technique uses a concentrated quaternary ammonium salt medium to enhance acidity for accurate determination.

Area of Science:

  • Analytical Chemistry
  • Physical Chemistry

Context:

  • Weak acid determination in complex media presents challenges due to limited hydrogen bonding.
  • Quaternary ammonium salt media facilitate acid-base titrations through enhanced complexation (homo- or heteroconjugation).

Purpose:

  • To propose a novel method for the direct determination of weak acids in concentrated quaternary ammonium salt media.
  • To investigate the titratability of theobromine and theophylline as weak acids.

Summary:

  • The proposed method utilizes a concentrated tetrabutylammonium acetate medium, a solvent with minimal hydrogen bonding.
  • Complexation within this medium enhances the acidity of conjugate acid-base pairs, enabling direct titration.
  • Theobromine and theophylline are successfully titrated as weak acids using silver nitrate in this specialized medium.

Related Experiment Videos

Last Updated: Jun 28, 2026

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
12:33

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

Published on: November 15, 2013

Impact:

  • This research offers a more effective approach for quantifying specific weak acids in challenging chemical environments.
  • The findings contribute to the advancement of analytical techniques for pharmaceutical and chemical analysis.