Nguyen Hai Phong, Mai Thi Thanh, Duong Cat Tien, Mai Xuan Tinh, Nguyen Phi Hung, Dinh Quang Khieu

Main Article Content

Abstract

Abstract: Zeolite Imidazole Framework (ZIF-8) composite was prepared and used as a novel electrode modified for the determination of trace levels of lead. ZIF-8 shows quite a good capability for the efficient adsorption of lead from aqueous solutions. The parameters affecting the electrochemical process, such as types of electrodes, solvents, the amount of ZIF-8 suspension, electrolytic solution pH of were investigated. Under the optimal conditions, the electrochemical sensor exhibited a linear response to the concentration of lead in the range of 2-500 ppb with a detection limit of 8.6 ppb. The RSD is 6.88% and 6.93% at concentration of 5 ppb and 20 ppb, respectively.

Keywords: Zeolite Imidazole Framework (ZIF-8); Modified electrode; Differential  Pulse  Anodic  Stripping Voltammetry; Bismuth  film (BiF); Determination of Pb(II).

References

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