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

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.