How to Cite
Abstract
A gold-copper film on the glassy-carbon electrode can be used to determine the trace amount of HgII by differential pulse anodic stripping voltammetry. The gold-copper film was in-situ deposited onto the glassy-carbon electrode surface in an aqueous solution containing HgII, HClO4 5 × 10-3 M, AuIII 0.2 mg/L, and CuII 0.05 mg/L at –1100 mV. In comparison with the gold film/glassy carbon electrode, this electrode has better repeatability while using a smaller amount of gold for film-forming. The HgII detection limit is 0.09 mg/L at a deposition time of 250 s. The repeatability of Ip is very good (n = 20) even at a very low concentration of HgII (5 mg/L, RSD = 2.6%).
References
- Bộ Y tế. Quy chuẩn kỹ thuật quốc gia về chất lượng nước ăn uống. QCVN 01:2009/BYT. Hà Nội: Bộ Y tế; 2009.
- Bộ Y tế. Quy chuẩn kỹ thuật quốc gia về chất lượng nước sạch sử dụng cho mục đích sinh hoạt. QCVN 01-1:2018/BYT. Hà Nội: Bộ Y tế; 2018.
- Amir MA, Zuzana K, Eliska S, Lukas R, Vojtech A. Review – Electrochemical sensors and biosensors for determination of mercury ions. J Electrochem Soc. 2018;165(16):B824-B834.
- Jovanovski V, Hrastnik NI. Insights into the anodic stripping voltammetric behaviour of copper film electrodes for determination of trace mercury. Microchem J. 2019;146:895-899.
- Chaiyo S, Chailapakul O, Siangproh W. Highly sensitive determination of mercury using copper enhanced by diamond electrode coupled with sequential injection – Anodic stripping voltammetry. Anal Chem Acta. 2014;852:55-62.
- Manivannan A, Ramakrishnan L, Seehra MS, Granite E, Butler JE, Tryk DA, et al. Mercury detection at boron doped diamond electrodes using a rotating disk technique. J Electronal Chem. 2005 ;557:287-293.
- Jovanovski V, Hrastnik NI, Hocevar SB. Copper film electrode for anodic stripping voltammetric determination of trace mercury and lead. Electrochem commun. 2015;57:1-4.
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Copyright (c) 2019 Array