Miniaturizable Chemiluminescence System for ATP Detection in Water

Area of Science:

• Analytical Chemistry
• Biochemistry
• Environmental Science

Background:

• Adenosine triphosphate (ATP) is a crucial biomarker for biological activity and water quality assessment.
• Existing ATP detection methods can be costly, complex, or lack real-time capabilities.
• Miniaturized, low-cost sensors are needed for widespread environmental monitoring.

Purpose of the Study:

• To design, fabricate, and test a novel, cost-effective, and miniaturized chemiluminescence-based detection system for adenosine triphosphate (ATP).
• To achieve high sensitivity and rapid response times for real-time ATP measurements in water samples.

Main Methods:

• Utilized a chemiluminescent reaction between ATP and a luciferin solution.
• Employed a silicon photomultiplier (SiPM) for highly sensitive, real-time photon detection.
• Fabricated a miniaturized system for efficient reactant handling and measurement.

Main Results:

• The system successfully detected adenosine triphosphate (ATP) in water samples.
• Achieved a low detection limit of 0.2 nM ATP.
• Demonstrated high sensitivity with a measurement of 79.5 A/M.
• Exhibited rapid response times, with reactant diffusion and mixing characterized at 0.3 ± 0.1 s, corresponding to a diffusion velocity of approximately 44 ± 14 mm²/s.

Conclusions:

• The developed low-cost, miniaturized system provides a sensitive and rapid method for ATP detection in water.
• This technology has potential applications in environmental monitoring, water quality assessment, and biological research.
• The system's performance metrics indicate its suitability for real-time, on-site measurements.