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Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
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Gas-evolving headspace technique toward highly-efficient vanadium pentoxide quantification.

Wei-Qi Xie1, Yi-Xian Gong1

  • 1School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, PR China.

Journal of Chromatography. A
|November 16, 2025
PubMed
Summary
This summary is machine-generated.

A new gas-evolving headspace method accurately measures vanadium pentoxide using CO2 detection. This automated technique offers advantages for industrial analysis and future indirect quantification methods.

Keywords:
GCGas-evolving reactionHeadspace techniqueVanadium pentoxide

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Area of Science:

  • Analytical Chemistry
  • Inorganic Chemistry

Background:

  • Accurate quantification of vanadium pentoxide (V2O5) is crucial for industrial applications.
  • Existing methods may lack efficiency or automation for large-scale analysis.

Purpose of the Study:

  • To develop and validate an innovative gas-evolving headspace technique for determining vanadium pentoxide.
  • To establish an automated method for efficient industrial analysis.

Main Methods:

  • Quantitative carbon dioxide (CO2) measurement using gas chromatography (GC).
  • Redox transformation of vanadium pentoxide with oxalic acid in an acidic, sealed vial system.
  • Development of an automated gas-evolving headspace analysis protocol.

Main Results:

  • The technique demonstrated excellent measurement reproducibility.
  • Satisfactory spike recovery rates were achieved across validation samples.
  • The method proved robust for industrial-scale analysis.

Conclusions:

  • The novel gas-evolving headspace GC technique provides an efficient and accurate method for vanadium pentoxide determination.
  • This automated approach offers significant advantages for industrial quality control.
  • The methodology serves as a template for developing other indirect gas-evolving headspace analyses.