Portable and Intelligent Urine Glucose Analyzer Based on a CdTe QDs@GOx Aerogel Circular Array Sensor

Area of Science:

• Biomedical Engineering
• Analytical Chemistry
• Materials Science

Background:

• Diabetes mellitus is a significant public health issue demanding efficient diagnostic tools.
• Current methods for glucose detection can be slow, lack sensitivity, or are not portable.
• Accurate and rapid glucose monitoring is crucial for diabetes screening and patient self-management.

Purpose of the Study:

• To develop a fast, sensitive, and portable urine glucose (UG) analyzer.
• To utilize cadmium telluride quantum dots (CdTe QDs)@glucose oxidase (GOx) aerogel sensors for fluorescence-based detection.
• To provide a reliable tool for diabetes screening and self-management.

Main Methods:

• Development of a CdTe QDs@GOx aerogel circular array sensor.
• Utilizing fluorescence quenching of CdTe QDs by hydrogen peroxide produced from glucose oxidation.
• Employing a CCD camera for fluorescence image capture and analysis.
• Developing C++ software for automated gray value and glucose concentration calculation.

Main Results:

• The UG analyzer demonstrated high sensitivity with a limit of detection (LOD) of 0.12 mM.
• A wide linear detection range of 0.12-26 mM was established.
• The analyzer showed good performance in detecting glucose in a large number of clinical samples.
• Results correlated well with existing UG test papers.

Conclusions:

• The developed UG analyzer offers a sensitive, rapid, and portable solution for glucose detection.
• This novel device holds significant potential for improving diabetes screening and patient self-management.
• The fluorescence-based detection method provides a reliable alternative for urine glucose analysis.