广西科技大学学报2025，Vol.36Issue(6)：75-83,108,10.DOI:10.16375/j.cnki.cn45-1395/t.2025.06.010
基于MXene/NH2-MIL-53修饰电极阳极溶出法同时测定铅和镉
Simultaneous determination of lead and cadmium by anodic dissolution method based on MXene/NH2-MIL-53 modified electrodes
摘要
Abstract
Trace amounts of Pb2+and Cd2+persist in the environment,and their long-term intake can lead to bioaccumulation and cause multisystem disorders,including neurological and renal diseases,posing severe risks to human health.In this paper,an electrochemical sensor based on MXene/NH2-MIL-53 was designed for the simultaneous detection of lead and cadmium ions,and its synthesis,characterization,and heavy metal ion detection capabilities were studied.The optimized optimal detection conditions were identified as follows:a 1.0 mg/mL modification solution prepared from 1.0 mg of material,an enrichment potential of-1.2 V,a pH value of 4.5,and an enrichment time of 300 s.Square wave anodic stripping voltammetry(SWASV)was employed for the individual quantification of Pb2+and Cd2+using the modified glassy carbon electrode.The linear detection ranges were 0.5-100.0 μg/L for Pb²+and 5.0-90.0 μg/L for Cd2+,with corresponding limits of detection of 0.260 and 0.234 μg/L,and sensitivities of 0.477 and 0.364 μA/(μmol·cm-3),respectively.Experimental results demonstrate that the electrode exhibits high sensitivity,low impedance,and excellent anti-interference capability,along with good repeatability and reproducibility.Moreover,the preparation is straightforward,enabling real-time on-site detection,and the sensor performed well in the analysis of real electronic-cigarette liquid samples.关键词
重金属离子/化学修饰电极/MXene/方波阳极溶出伏安法(SWASV)/电子烟Key words
heavy metal ions/electrochemical sensor/MXene/square wave anodic stripping voltammetry(SWASV)/e-cigarette分类
信息技术与安全科学引用本文复制引用
梁超,张浩,张越,李利军..基于MXene/NH2-MIL-53修饰电极阳极溶出法同时测定铅和镉[J].广西科技大学学报,2025,36(6):75-83,108,10.基金项目
广西糖资源绿色加工重点实验室开放课题(GXTZYZR202209)资助 （GXTZYZR202209）
