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Journal of ZheJiang University (Engineering Science)  2026, Vol. 60 Issue (1): 217-230    DOI: 10.3785/j.issn.1008-973X.2026.01.021
    
Review of environmental heavy metal detection based on microelectrode arrays
Yiming YU1(),Wei CAI1,2,*(),Yi LI3,Wei FU3,Xu YAO1,Tingyi ZHANG1,Shangqi DIAO1,Dan LI1,Songqing LIN1,Yongshun CHEN1
1. Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
2. Advanced Institute of Ocean Research, Southern University of Science and Technology, Shenzhen 518055, China
3. School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, China
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Abstract  

Compared with conventional electrodes, microelectrode arrays have the advantages of high mass transfer rate, high current density and high signal-to-noise ratio. The analysis of environmental samples (such as soil, river and lake water) which are highly susceptible to heavy metal contamination using microelectrode arrays is a hot research spot in the field of heavy metal detection. The detection performance of heavy metals such as zinc, cadmium, lead and copper could be enhanced by utilizing the micro-nano processing technology to construct various structures of microelectrode arrays and combining with the electrochemical voltammetry technology. By optimizing electrode structures and modifying them with sensitive materials like mercury films, gold nanoparticles, graphene and metal-organic frameworks, the detection limits of heavy metals can be further reduced, and the linear ranges can be broadened. The performance of the unique structures and the modified materials of microelectrode arrays in qualitative and quantitative analysis of heavy metals, and the anti-interference capabilities of microelectrode arrays in the detection of real environmental samples were systematically summarized.



Key wordsmicroelectrode array      micro-nano processing      heavy metal      electrochemical analysis      voltammetry     
Received: 14 January 2025      Published: 15 December 2025
CLC:  TP 393  
Fund:  国家重点研发计划资助项目(2022YFC3104700);广东省珠江人才计划资助项目(2021QN02H436);深圳市自然科学基金资助项目(JCYJ20220530113013030).
Corresponding Authors: Wei CAI     E-mail: 12332257@mail.sustech.edu.cn;caiw@sustech.edu.cn
Cite this article:

Yiming YU,Wei CAI,Yi LI,Wei FU,Xu YAO,Tingyi ZHANG,Shangqi DIAO,Dan LI,Songqing LIN,Yongshun CHEN. Review of environmental heavy metal detection based on microelectrode arrays. Journal of ZheJiang University (Engineering Science), 2026, 60(1): 217-230.

URL:

https://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2026.01.021     OR     https://www.zjujournals.com/eng/Y2026/V60/I1/217


基于微电极阵列的环境重金属检测研究进展

微电极阵列相较于常规电极具有传质速率高、电流密度大、信噪比高等优势,利用微电极阵列分析土壤、河水、湖水等极易受到重金属污染的环境样品是重金属检测领域的研究热点. 采用微纳加工工艺构建不同结构的微电极阵列,结合电化学伏安技术,能够提升对锌、镉、铅、铜等重金属的检测性能. 通过优化电极结构和修饰敏感材料如汞膜、纳米金、石墨烯、金属有机框架等,可以进一步降低重金属检出限并拓宽线性范围. 系统地综述微电极阵列的独特结构与修饰材料在重金属定性和定量分析方面的性能,及其在实际环境样品检测中的抗干扰能力.


关键词: 微电极阵列,  微纳加工,  重金属,  电化学分析,  伏安法 
伏安法施加电位曲线电流-电压特性曲线C/(mol·L?1)
线性扫描伏安法
(linear sweep voltammetry, LSV)
10?2~10?6
差分脉冲伏安法
(differential pulse voltammetry, DPV)
10?4~10?7
方波伏安法
(square wave voltammetry, SWV)
10?4~10?8
阳极溶出伏安法
(anodic stripping voltammetry, ASV)
10?6~10?11
吸附溶出伏安法
(adsorptive stripping voltammetry, AdSV)
10?6~10?12
Tab.1 Main voltammetric techniques and their concentration measurement ranges for trace heavy metal analysis[32]
Fig.1 Diffusion mechanism of microelectrode arrays under different electrode spacings
Fig.2 Surface diffusion models and steady-state current equations of microelectrodes with different shapes in microelectrode arrays[45]
国家单位研究团队国家单位研究团队
德国亚琛应用技术大学Huck团队菲律宾迪利曼大学Luna团队
瑞士日内瓦大学Mary-Lou团队日本东京工业大学Tokuda团队
希腊雅典大学Kokkinos团队新加坡南洋理工大学Miao团队
斯洛伐克斯洛伐克理工大学Rehacek团队中国中国科学院空天信息创新研究院边超教授团队
英国牛津大学Ordeig团队中国北京工业大学刘旭教授团队
爱尔兰廷德尔国家研究所Daly团队中国中国科学院烟台海岸带研究所潘大为教授团队
波兰斯克罗多夫斯卡大学Grca团队中国浙江大学王平教授团队
法国波城大学Authier团队中国宁波大学金庆辉教授团队
埃塞俄比亚哈瓦萨大学Washe团队中国哈尔滨工业大学闫永达教授团队
美国中佛罗里达大学White团队中国南方科技大学笔者团队
美国麻省理工学院Kanhere团队
Tab.2 Research groups related to microelectrode arrays for environmental heavy metal detection
Fig.3 Gold microelectrode array sensor chip[55]
Fig.4 Manufacturing process of disposable bismuth microelectrode array[70]
Fig.5 Micropillar electrode array designed based on shark olfactory receptors[85]
Fig.6 Microelectrode array based on nitrogen-doped DLC[90]
Fig.7 Multi-parameter integrated chip based on MEMS technology[98]
Fig.8 Triangle-shaped gold microelectrode array[113]
文献工作电极材料应用环境检测物质nmdm/μmLRρ/(μg·L?1)LOD/(μg·L?1)
[55]金/汞配制溶液锌/镉/铅/铜4×410—/0.3~200/1.0~200/
1.0~300
—/0.1/0.5/0.1
[56]金/汞海水锌/镉/铅/铜19×102.519.6/5.6/10.3/12.7
[58]金/汞配制溶液锌/铅/铜4×450/3010~505.5/8.9/8.6
[59]金/汞配制溶液锌/镉/铅/铜8×81010~200/1~100/
5~100/10~200
3/0.3/1/2
[63]铱/汞配制溶液锌/镉/铅33×3331/0.2/0.5
[63]铱/汞配制溶液锌/镉/铅42×4260.5/0.1/0.1
[64]铱/汞海水锌/镉/铅10×1051×104~5×104630/600/590
[70]湖水12×12102~150.7
[71]金/铋饮用水20×20520~1007
[72]铱/汞配制溶液30×3050.5~15
[73]金/铋螃蟹样品5~500.86
[74]配制溶液2510
[75]河水8×8131~101.3
[76]鱼类样品3.7~80.45
[77]碳/铋/聚溴甲酚紫废水0~2500.036
[82]铂/汞配制溶液32×32510~100
[83]铱/汞河水10×1050.2~20.05
[84]铱/汞配制溶液50.1~500.1
[85]配制溶液2410010~1000.8
[86]配制溶液505~1000.82
[87]配制溶液205~110.60.41
[88]碳/镍纳米颗粒配制溶液2~1001
[89]自来水6690.1~500.093
[90]类金刚石/铋配制溶液5062534.1~24.82.5
[95]自来水5641220~1005
[98]铂/金纳米颗粒配制溶液500~6002.33
[99]金/金纳米颗粒河水112100.5~2000.2
[100]河水30050.1~3 0000.1
[103]配制溶液25620676~20 000176.8
[104]配制溶液256510~2003.2
[106]饮用水241~200.590.134
[108]铱/汞湖水5×20555~8255.5
[110]铱/汞配制溶液564102~200.5
[113]河水792180.04~40.80.016
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