Gold–Copper Film Electrode for Voltammetry Determination of Mercury in Water

Journal of Nanomaterials - Tập 2021 - Trang 1-9 - 2021
Nhi Phuong Thi Nguyen1,2, Nguyễn Thị Huệ2, Nguyen Van Hop2, Hoang Thai Long2
1Department of Chemistry, Biology, Environment, Pham Van Dong University, Quang Ngai, Vietnam
2Department of Chemistry, University of Sciences, Hue University, Hue, Vietnam

Tóm tắt

Gold-copper film electrode prepared in situ on carbon paste solid disk substrate (Au–CuF/CPE) was studied as a working electrode. The factors influencing mercury stripping peak currents, such as C Au III (0.20 mg/L), C Cu II (0.05 mg/L), type of acids and their concentration (HClO4, 0.005 M), deposition potential (-800 mV) for Au–CuF/CPE, deposition time (180 s), and interferents, were investigated and optimized. The method has a low limit of detection of 0.13 μg/L and is not affected significantly by the examined ions/substance. It was applied to detect the concentration of Hg in real water samples and is promising for practical usage.

Từ khóa


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