研究目的
Developing reliable, sensitive and selective methods for the determination of low concentrations of mercury in food and drinking water.
研究成果
The designed sensor exhibits a limit of detection (LOD) of 1 pM for mercury II ions, which is significantly lower than the WHO maximum permissible limit in drinking water. The sensor also shows high selectivity towards mercury ions over other heavy metal ions.
研究不足
The study does not discuss the long-term stability of the sensor or its performance in real-world samples beyond controlled laboratory conditions.
1：Experimental Design and Method Selection:
The study involves the design of an ion-imprinted polymer (IIP) for the selective detection of mercury II ions, electropolymerized on ZnO nanorods grown on gold/diazonium modified substrates.
2：Sample Selection and Data Sources:
The samples include gold electrodes modified with diazonium salt and ZnO nanorods.
3：List of Experimental Equipment and Materials:
Includes a PG581 Bio-Logic portable potentiostat, Ag/AgCl reference electrode, platinum grid counter electrode, and gold substrate working electrode.
4：Experimental Procedures and Operational Workflow:
Involves surface functionalization by diazonium salt, synthesis and deposition of ZnO nanorods, and realization of IIP and NIP electrodes.
5：Data Analysis Methods:
Square wave voltammetry technique was used to investigate the electrochemical response of the sensor towards mercury in solution at different concentrations.
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