Bhatia Naresh, Mehta Daisy, Garg Kalpana, Kaur Sukhjot, Nagaiah Tharamani C
Department of Chemistry, Indian Institute of Technology Ropar, Rupnagar, Punjab, India.
Chem Asian J. 2025 Mar 3;20(5):e202401315. doi: 10.1002/asia.202401315. Epub 2025 Jan 10.
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 cm, 1.03 μA μM cm and 5.14 mA mM cm) for, Pb, Cd and Cu, respectively. Moreover, the reproducibility, and selectivity of the sensor was investigated in the presence of K, Mg, Zn, Ni, and Fe which are the possible interferents present in water.
重金属离子是水污染的主要来源，因其致癌特性对生态平衡和人类健康构成重大威胁。对重金属检测的需求不断增加，凸显了电化学方法的优势，该方法具有高灵敏度和高效率。在此，在缓冲液pH值为5.0的既定条件下，利用介孔含氮碳（MNC）通过方波伏安法同时测定重金属。MNC对Pb、Cd和Cu的检测限低（分别为1、10和50 μM），线性范围宽（分别为1 μM - 6 mM、10 μM - 7 mM和50 μM - 17 mM），灵敏度高（分别为2.5 μA μM cm、1.03 μA μM cm和5.14 mA mM cm）。此外，在存在K、Mg、Zn、Ni和Fe（水中可能存在的干扰物）的情况下，研究了该传感器的重现性和选择性。
