▎ 摘 要
NOVELTY - Sensor comprises a hydrophilic and reduced graphene oxide matrix decorated with small quantities of metal-oxides preferably titanium dioxide, zinc oxide, iron oxide and/or binary metal-oxide titanium dioxide, zinc oxide nanoparticles which is deposited on substrate comprising indium tin oxide conducting glass plate. USE - The sensor is useful for detection of heavy metals in drinking water (claimed). ADVANTAGE - The sensor is portable, inexpensive, eco-friendly and detects heavy metals rapidly in a reliable manner.