NEWS

• Scientists at the University of Tasmania have developed a portable ion chromatograph (Aquamonitrix) for real-world chemical analysis.
• Traditionally, ion chromatography requires expensive lab-based instruments, but this device enables on-site testing of soil and water samples.
• Published in Journal of Chemical Education (2025), the study highlights its role as both a teaching tool and an environmental monitoring solution.

HIGHLIGHTS

How It Works

• Ion Chromatography: Separates ions in a sample using a column.
• Aquamonitrix Features:
  • Low-pressure system with a short column.
  • Uses sodium chloride solution as carrier → eco-friendly.
  • Equipped with UV absorbance detector to detect nitrate and nitrite.
• Students extracted soil pore water on-site, filtered it, and injected it directly into the device.

Advantages Over Conventional Systems

• Portable & Cost-Effective:
  • Lab chromatographs cost ~$100,000; portable device ~$10,000.
  • Battery-operated, usable by students with minimal training.
• Accuracy: Results matched conventional lab-based chromatographs.
• Simplicity: Focuses only on key ions (nitrate, nitrite) without complex interference.

Applications

• Field Studies: Monitoring nitrogen cycle in soil, rivers, and water treatment plants.
• Environmental Use: Detecting nitrate, nitrite, ammonia, and future expansion to arsenic — crucial for India and Bangladesh where arsenic contamination is severe.
• Education:
  • Enhances hands-on learning in line with 2023 ACS Guidelines.
  • Bridges theory and field practice, helping students connect chemistry with real-world problems.