Specific heavy metal/metalloid sensors: current state and perspectives

Area of Science:

• Environmental Science
• Analytical Chemistry
• Biotechnology

Background:

• Heavy metal(loid)s are crucial for biological processes but pose significant environmental and health risks at elevated concentrations due to industrial accumulation.
• Traditional instrument-based heavy metal analysis is expensive and time-consuming, necessitating the development of alternative detection methods.
• Monitoring heavy metal(loid)s in environmental systems is critical for human health and ecosystem preservation.

Purpose of the Study:

• To review current heavy metal(loid) detection techniques, with a specific focus on biosensors.
• To analyze the advantages, disadvantages, and mechanisms of newly developed heavy metal sensors.
• To propose strategies for enhancing the field applicability of biosensors and developing novel, objective targeting sensors.

Main Methods:

• Mini-review of existing literature on heavy metal(loid) detection techniques.
• Emphasis on biosensor technologies, including electrochemical and biological system-based sensors.
• Analysis of sensor mechanisms, performance, and practical implementation challenges.

Main Results:

• Various novel heavy metal detection techniques, particularly biosensors, have emerged.
• Significant challenges remain in translating laboratory-based biosensor systems to reliable fieldwork applications.
• Biological system-based sensors show promise but require further development for improved applicability.

Conclusions:

• Biosensors offer a promising alternative to traditional methods for heavy metal(loid) detection.
• Further research is needed to overcome the gap between laboratory performance and field usability of biosensors.
• Developing objective targeting sensors and refining current biosensor mechanisms are key future directions.