Preparation Electroanalysis Based on Sensor Nanosheets G-C3N4/CPE for Determination of Amount Hg2+ ion in Water Samples by Square Wave Anodic Stripping Voltammetry (SWASV) Method

Subject Areas : Polymer

Shahnaz Davoudi ¹ , Mohammad Reza Asghari Ganjeh ²

1 - Department of Chemistry, Omidiyeh Branch, Islamic Azad University, Omidiyeh, Iran.
2 - Department of Chemistry, Omidiyeh Branch, Islamic Azad University, Omidiyeh, Iran.

Received: 2021-11-21 Accepted : 2021-11-21 Published : 2022-01-01

Keywords:

Abstract :

This study describes the construction of a new electrochemical sensor and applies it for the determination of Hg2+ ion. This sensor was prepared using new nanographene on G-C3N4 nanosheets. Although the other methods (gas or liquid chromatographic, electrophoresis, flow injection) for measuring Hg2+ ion have advantages such as excellent accuracy and reproducibility, it has limitations such as long-time measure, high equipment cost. Here, we report the use of an electrochemical approach for analytical determination of Hg2+ ion that takes 120 s. The calibration curve was linear in the range of (0.03 to 33.0 nM). The current response was linearly proportional to the Hg2+ion concentration with a R2~ 0.999. We demonstrated a sensitivity a limit of detection of (0.093 nM). Finally, Sensor nanosheets G-C3N4/CPE has been successfully applied for the determination of Hg2+ ion in different kind of water samples. The method introduced to measure Hg2+ ion in real samples such as water samples was used and can be used for other samples.

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