水溶液中的金属离子
电化学
金属
碳纤维
检出限
氮气
选择性
介孔材料
再现性
伏安法
材料科学
分析化学(期刊)
化学
无机化学
环境化学
电极
色谱法
冶金
催化作用
有机化学
物理化学
复合数
复合材料
生物化学
作者
Naresh Bhatia,Daisy Mehta,Kalpana Garg,Sukhjot Kaur,Tharamani C. Nagaiah
标识
DOI:10.1002/asia.202401315
摘要
Heavy metal ions are major contributors to water pollution, posing significant threats to both ecological balance and human health due to their carcinogenic properties. The increasing need for heavy metal detection highlights the advantages of electrochemical methods, which offer high sensitivity and efficiency. Herein mesoporous nitrogen containing carbon (MNC) was utilized for the simultaneous determination of heavy metals using square wave voltammetry technique in the established conditions of a buffer pH of 5.0. MNC demonstrated low detection limits (1, 10 and 50 μM), wide linear ranges (1 μM – 6 mM, 10 μM – 7 mM and 50 μM – 17 mM), and high sensitivities (2.5 μA μM‐1 cm‐2, 1.03 μA μM‐1 cm‐2 and 5.14 mA mM‐1 cm‐2) for, Pb²⁺, Cd²⁺ and Cu²⁺, respectively. Moreover, the reproducibility, and selectivity of the sensor was investigated in the presence of K+, Mg2+, Zn2+, Ni2+, and Fe3+ which are the possible interferents present in water
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