Manjunatha Kumara K S, Siddiqa Aisha, Shiva Kumar P, Lavanya Golla, Budagumpi Srinivasa, Hegde Gurumurthy, Nagaraju D H, Usha Rani N
Department of Chemistry, School of Applied Sciences, REVA University Bangalore 560064 Karnataka India
Center for Nano and Material Sciences, JAIN (Deemed-to-be-University) Jakkasandra Ramanagar (D) 562112 Karnataka India.
RSC Adv. 2025 Jan 3;15(1):467-476. doi: 10.1039/d4ra05688d. eCollection 2025 Jan 2.
Assessing heavy metal ion (HMI) contamination to sustain drinking water hygiene is a challenge. Conventional approaches are appealing for the detection of HMIs but electrochemical approaches can resolve the limitations of these approaches, such as tedious sample preparation, high cost, time consuming and the need for trained professionals. Here, an electrochemical approach is developed using a nano-sphered polypyrrole (PPy) functionalized with MoS (PPy/MoS) by square wave anodic stripping voltammetry for the detection of HMIs. The developed sensor can detect Pb with a limit of detection of 0.03 nM and a sensitivity of 36.42 μA nM. Additionally, the PPy/MoS sensor was employed for the simultaneous detection of HMIs of Cd, Pb, Cu and Hg. The reproducibility, stability and anti-interference studies confirm that the sensor can be used to monitor HMI contamination of water.
评估重金属离子（HMI）污染以维持饮用水卫生是一项挑战。传统方法在检测HMI方面具有吸引力，但电化学方法可以解决这些方法的局限性，例如繁琐的样品制备、高成本、耗时以及需要专业人员。在此，通过方波阳极溶出伏安法开发了一种使用用MoS功能化的纳米球形聚吡咯（PPy）（PPy/MoS）的电化学方法来检测HMI。所开发的传感器能够检测铅，检测限为0.03 nM，灵敏度为36.42 μA nM。此外，PPy/MoS传感器用于同时检测镉、铅、铜和汞的HMI。重现性、稳定性和抗干扰研究证实该传感器可用于监测水中的HMI污染。
