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The exposure, accumulation and contamination of heavy metals to humans and ecosystem through vegetables are serious health threats. One of the most important ingredients of foods i.e, onion uptake poisonous...

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Graphene prepared through exfoliation process was printed on paper substrate using inkjet-printer and then printed paper electrode was used as an electrochemical sensor for analysis of H2O2 in cyclic voltammetry.

Heteroatom doped GQDs are new emerging organic materials show photoluminescence property. It creates defect in structure and enhance its properties, for bio sensing applications.