MUMBAI, India, Feb. 13 -- Intellectual Property India has published a patent application (202641008527 A) filed by Srm University, Amaravati, Andhra Pradesh, on Jan. 28, for 'a handheld ligand-based electrochemical sensing system for detecting heavy metal ions in an aqueous sample.'
Inventor(s) include Ramkumar Kaliyaperumal; Sneigitha Govindarajan; and Sabyasachi Mukhopadhyay.
The application for the patent was published on Feb. 13, under issue no. 07/2026.
According to the abstract released by the Intellectual Property India: "The present disclosure relates to a handheld ligand-based electrochemical sensing system(100) and method(200) for rapid and selective detection of heavy metal ions in an aqueous sample. The system(100) comprises a replaceable sensing cartridge(110) defining a sample chamber and including a disposable screen-printed electrochemical cell with a working electrode(114) functionalized by a chemically engineered organic ligand layer(112) configured for selective coordination with target heavy metal ions. An electrochemical measurement module(120) includes a potentiostat circuit(122), a transimpedance amplification stage(124), and an analog-to-digital conversion unit(126) to generate and digitize faradaic current signals arising from ligand-metal redox reactions. An embedded control and processing unit(130) applies digital filtering(132), peak detection(134), and stored calibration data(136) to identify metal-specific electrochemical signatures and calculate ion concentrations in real time. A user interface module(150) provides visual display(152) and alert outputs(154) when regulatory thresholds are exceeded. The system enables portable, field-deployable monitoring of lead, arsenic, and mercury in water samples."
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