The present chapter provides an overview of the sources, consequences, and
quantification of heavy metal ions (HMIs) present in the water sample. Heavy metal
ions are recognized as one of the major water pollutants. Long-term consumption of
HMIs causes serious health hazards and is also a threat to the ecosystem. In this regard,
the synthesis and use of nanocomposites for the selective quantification of HMIs have
been discussed in detail.
Keywords: Electrochemical sensor, Heavy metal ions, Modified electrodes, Nanocomposite
