便携式重金属电化学传感器研制及其在大米重金属检测中的应用  

Development of portable electrochemical sensor for heavy metals and application of detection of heavy metals lead and cadmium in rice

作　　者：徐昊阳 王冉冉 姚帮本[3] 陈伟 邓尚贵 姚丽 XU Haoyang;WANG Ranran;YAO Bangben;CHEN Wei;DENG Shanggui;YAO Li(College of Food and Pharmacy,Zhejiang Ocean University,Zhoushan,Zhejiang 316022,China;School of Food and Biological Engineering,Hefei University of Technology,Hefei,Anhui 230601,China;Anhui Province Institute of Product Quality Supervision&Inspection,Hefei,Anhui 230051,China;School of Food and Bioengineering,Changsha University of Science and Technology,Changsha,Hunan 410114,China)

机构地区：[1]浙江海洋大学食品与药学学院,浙江舟山316022 [2]合肥工业大学食品与生物工程学院,安徽合肥230601 [3]安徽省产品质量监督检验研究院,安徽合肥230051 [4]长沙理工大学食品与生物工程学院,湖南长沙410114

出　　处：《食品与机械》2024年第7期37-42,共6页Food and Machinery

基　　金：安徽省自然科学基金项目(编号:2208085QB56);国家重点研发计划项目(编号:2022YFF1102900);安徽省重点研究与开发计划项目(编号:2022f04020003)。

摘　　要：[目的]建立大米中Cd^(2+)和Pb^(2+)的电化学快速检测方法。[方法]采用一次性丝网印刷电极,基于阳极溶出伏安法,建立了基于同位镀铋电极的便携式电化学传感器。[结果]通过方波伏安法(SWV)、循环伏安法(CV)、计时电流法(I-T)对传感器进行了优化,在最适检测条件下,Cd^(2+)的线性范围为20~80μg/L,Pb^(2+)的线性范围为10~80μg/L,Cd^(2+)的检测限为1.2010μg/L,Pb^(2+)的检测限为0.9639μg/L。[结论]建立的重金属电化学传感器灵敏度高,操作简单、快速、绿色环保。[Objective]To develop an efficient electrochemical method for the rapid detection of cadmium and lead ions(Cd^(2+)and Pb^(2+))in rice samples.[Methods]Designed a portable electrochemical sensor utilizing a disposable screen printed electrode and anodic stripping voltammetry with an isoplated bismuth electrode.This setup was further optimized through square wave voltammetry(SWV),cyclic voltammetry(CV),and chronocurrent methods(I-T).[Results]The proposed approach exhibited outstanding performance with a linear detection range of 20 to 80μg/L for Cd^(2+)and 10 to 80μg/L for Pb^(2+).The LOD of the cadmium ion were 1.2010μg/L,the LOD of the lead ion were 0.9639μg/L.[Conclusion]Our newly established electrochemical sensor for heavy metal detection in rice offers high sensitivity,ease of operation,rapid analysis,and aligns with environmentally friendly practices.

关 键 词：大米 重金属残留 丝网印刷电极 电化学检测 

分 类 号：O657.1[理学—分析化学] TS210.7[理学—化学]