Electrochemical Sensors for Heavy Metal Ion Detection in Water and Food
This research community develops electrochemical devices to identify and quantify toxic heavy metal ions, such as lead, cadmium, and mercury, in environmental water samples and food products.
The work centers on modifying electrode surfaces with carbon-based nanomaterials, including graphene oxide and carbon nanotubes, to enhance sensitivity. Researchers employ techniques like anodic stripping voltammetry and potentiometric sensing to achieve simultaneous detection of multiple ions. The primary goal is to create highly sensitive, selective, and often portable sensors that can operate in complex matrices like drinking water and food samples. Materials such as metal-organic frameworks and bismuth are frequently used to improve electrode performance. The focus remains on practical application, moving from laboratory characterization to real-world sample analysis.
The largest share of the community's output is found in mercury research, accounting for 4.8% of all mercury research tracked. This is followed by bismuth, which represents 1.9% of bismuth research, and cadmium, at 1.1%. Mercury also contributes the highest number of papers to this group, with 3,296 entries.
The community comprises 18,145 papers, published primarily in Analytica Chimica Acta, the Journal of Electroanalytical Chemistry, and Analytical Chemistry.
Recent work continues to focus on novel electrode materials, such as nickel-based metal-organic frameworks and silica-based composites, for detecting trace-level heavy metals in drinking water and food. Several recent studies also explore the integration of these sensors with environmental monitoring systems and the use of functionalized nanocomposites for toxic metal ion sensing.