MUMBAI, India, Nov. 21 -- Intellectual Property India has published a patent application (202531083066 A) filed by University Of Calcutta, Kolkata, West Bengal, on Sept. 1, for 'method for detecting polyethylene (pe) microplastics.'
Inventor(s) include Dr. Kamalika Sen; and. Dr. Debashree Das.
The application for the patent was published on Nov. 21, under issue no. 47/2025.
According to the abstract released by the Intellectual Property India: "Method for detecting polyethylene (PE) microplastics The present invention relates to the field of nanotechnology and discloses a novel fluorescent copper selenide (CuSe) nanosensor synthesized by a one-step, green, rapid, and economical process using copper sulphate, sodium selenite, and dextrose as reducing and stabilizing agent. The invention provides a simple spectrofluorometric method for the selective detection and quantification of polyethylene (PE) microplastics, specifically high-density polyethylene (HDPE) and low-density polyethylene (LDPE), in diverse matrices. The nanosensor exhibits high specificity for polyethylene over other polymers such as polypropylene and polyvinyl chloride, and shows superior performance compared to other metal chalcogenide nanoparticles (ZnS, ZnSe, CuS, FeS, FeSe). The method enables rapid, cost-effective, and non-toxic detection of HDPE and LDPE microplastics from commercial products (scrubs, bags, cups, tea bags), environmental samples (river water, sediments), and biological samples (milk, blood, liver). This invention, for the first time, provides a portable and eco-friendly nanosensor system for precise quantification of polyethylene microplastics in complex matrices."
Disclaimer: Curated by HT Syndication.
