文献类型：期刊文献

英文题名：Heavy Metal Ion Detection by Carbonized Metal–Organic–Framework (MOF-C) Nanocomposite-Modified Electrochemical Sensors

作者：Wang, Wei[1,2]; Zhao, Peiting[3]; Wang, Chenjie[3]; Xu, Aixuan[4,5]; Ma, Wei[3]; Wang, Gan[3]; Han, Zehua[3]; Lu, Yishan[4,5]; Yan, Jin[1]; Peng, Ran[3]

机构：[1] Guangdong Provincial Key Laboratory of Intelligent Equipment for South China Sea Marine Ranching, Guangdong Ocean University, Zhanjiang, 524088, China; [2] College of Naval Architecture and Shipping, Guangdong Ocean University, Zhanjiang, 524088, China; [3] Marine Engineering College, Dalian Maritime University, Dalian, 116026, China; [4] Fisheries College, Guangdong Ocean University, Zhanjiang, 524088, China; [5] Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, College of Fisheries, Guangdong Ocean University, Zhanjiang, 524088, China

年份：2026

卷号：14

期号：2

外文期刊名：Chemosensors

收录：EI(收录号：20260920179021)

语种：英文

外文关键词：Chemical detection - Electrochemical electrodes - Marine biology - Marine pollution - Metal detectors - Metal ions - Metal working - Signal detection

外文摘要：Efficient detection of heavy metal ions in complex marine environments is essential to the safety of marine organisms and human beings. This study developed a novel screen-printed-electrode (SPE) electrochemical sensor for rapid on-site determination of typical heavy metal ions such as Cu2+, Pb2+, Cd2+, and Hg2+ in seawater. The sensor employs a three-electrode system, with the working electrode modified with a composite of metal–organic framework-derived carbon (MOF-C) and multiwalled carbon nanotubes (MWCNTs), thereby significantly enhancing detection sensitivity and selectivity. By optimizing square-wave anodic stripping voltammetry (SWASV) parameters, detection limits of 0.83, 0.40, 1.05, and 0.30 μM for the detection of Cu2+, Pb2+, Cd2+, and Hg2+ ions were achieved. In mixed-ion detection, excellent peak separation and strong resistance to interferences were demonstrated. Experimental results demonstrate that the sensor exhibits good linear response, excellent interference resistance, and high practicality, providing a new approach for rapid on-site determination of heavy metal pollution in marine environments. ? 2026 by the authors.