Details

Autor(en) / Beteiligte

• Lu, Yuanyuan
• Liang, Xinqiang
• Niyungeko, Christophe
• Zhou, Junjie
• Xu, Jianming
• Tian, Guangming

Titel

A review of the identification and detection of heavy metal ions in the environment by voltammetry

Ist Teil von

• Talanta (Oxford), 2018-02, Vol.178, p.324-338

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2018

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Currently, environmental pollution by heavy metals is a global problem. Therefore, it is crucial to develop effective detection techniques to determine the levels of heavy metal contamination in various mediums. Voltammetry is a highly sensitive electrochemical method used for the in situ detection of heavy metal ions. This study investigates the current trends related to electrode modification, developments in materials, and optimization of the experimental parameters. We discuss the sensing performance of four kinds of nanomaterials capable of inorganic modification (metal nanoparticles, metal oxides, carbonaceous nanomaterials, and their nanocomposites). The impact of several important factors, such as the deposition potential and time, buffer solution types, and pH on the sensitivity, reproducibility, stability, and anti-interference ability of the detection process, especially with regard to the co-detection of several heavy metal ions, was reviewed. We noted that in addition to the application of voltammetry to water-related issues, it is suitable for rapid and simple identification and analyses of heavy metals in polluted soil and other mediums. Thus, it is important to conduct additional research on the application of voltammetry to this area. [Display omitted] •Basic principles of voltammetry for heavy metal detection were reviewed.•The sensing performance of inorganic nanomaterials modification were discussed.•The impact of several important experimental factors were emphasized.•The application of voltammetry involves in many mediums.