Microelectrode array sensor for water quality monitoring

Area of Science:

• Materials Science
• Environmental Science
• Sensor Technology

Background:

• Traditional water quality monitoring methods can be limited in scope and real-time application.
• The need for robust, adaptable sensors for diverse aquatic environments is critical.

Purpose of the Study:

• To develop a versatile microelectrode array sensor for comprehensive water quality monitoring.
• To optimize sensor design for stability, high-pressure operation, and broad applicability.

Main Methods:

• Utilized batch microelectronic fabrication processes for sensor array construction.
• Engineered a stable silicon chip surface passivation and incorporated backside contact.
• Optimized packaging for robust on-line water operation under high-pressure conditions.

Main Results:

• Achieved a highly stable sensor surface passivation through advanced fabrication.
• Demonstrated the sensor's capability for on-line operation in high-pressure aquatic environments.
• Successfully applied the sensor to monitor chlorine, ozone, dissolved oxygen, and trace arsenic.

Conclusions:

• The developed microelectrode array sensor is a versatile and stable platform for various water quality parameters.
• The sensor's design facilitates reliable on-line monitoring in demanding industrial and environmental settings.
• This technology holds significant potential for advancing real-time water quality assessment.