Soil carbon sensing methodology and electrode arrangement
The electrode arrangement with a specific coating composition for squarewave voltammetry effectively detects humic and fulvic acids in soil, addressing the limitations of existing technologies by enhancing sensitivity and mechanical stability for in situ soil carbon sensing.
Patent Information
- Application Number
- PCT/AU2025/050522
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-05-22
- Filing Date
- 2025-05-17
- Publication Date
- 2025-11-27
AI Technical Summary
Existing soil carbon sensing technologies face challenges in providing cost-effective, in situ detection of humic and fulvic acids due to fouling of sensor optics and limited penetration depth of IR radiation, and electrochemical sensors lack quantitative analysis of total organic/inorganic carbon.
An electrode arrangement with a coating comprising ionic liquid, sulfonated tetrafluoroethylene-based fluoropolymer-copolymer, conductive carbon particles, polymeric adsorbent non-ionic aliphatic acrylic resin, and cross-linked hydrogel, configured for squarewave voltammetry, allows for the detection of humic and fulvic acids and water-soluble molecules with electrochemically active quinone/phenol functional groups in a soil matrix.
The electrode arrangement enables sensitive and reversible detection of humic and fulvic acids, providing insights into soil carbon content and health through squarewave voltammetry, with improved mechanical stability and sensitivity, suitable for long-term soil monitoring.