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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].

G Demange-Guerin1

  • 1Laboratoire de Chimie Analytique de la Faculté des Sciences associé au C.N.R.S., 10 rue Vauquelin, Paris V(o) France.

Talanta
|November 1, 1970
PubMed
Summary
This summary is machine-generated.

This study determined dissociation constants for 26 acids and bases in dimethylformamide (DMF), establishing a comprehensive acidity scale. Results from multiple methods, including a hydrogen electrode, showed good agreement, validating their use in DMF titrations.

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Area of Science:

  • Electrochemistry
  • Analytical Chemistry

Context:

  • Dimethylformamide (DMF) is a crucial polar aprotic solvent in various chemical syntheses.
  • Accurate measurement of acid-base properties in non-aqueous solvents like DMF is essential for reaction control and understanding.
  • Existing acidity scales in DMF have limitations, necessitating reliable determination of dissociation constants.

Purpose:

  • To determine the dissociation constants of 26 acids and bases in dimethylformamide (DMF).
  • To establish a reliable and extended acidity scale for DMF, ranging from pH 0 to 16.
  • To evaluate the suitability of different electrochemical and spectrophotometric methods for acid-base analysis in DMF.

Summary:

  • Multiple methods, including hydrogen and glass electrodes, and spectrophotometry, were employed to measure dissociation constants.

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

  • An acidity scale for DMF was successfully established, with results from different techniques showing good agreement.
  • The hydrogen electrode proved versatile for both voltammetry and acid-base titrations in DMF.
  • Relating the DMF acidity scale to the water scale presented challenges, with Strehlow's approach appearing more plausible.

    • Impact:

    • Provides a robust set of dissociation constants and a validated acidity scale for dimethylformamide.
    • Demonstrates the utility of the hydrogen electrode for electrochemical applications in DMF.
    • Offers insights into the challenges and potential solutions for inter-solvent acidity scale comparisons.