Research and Application Progress of Electrochemical Technology in Rapid Detection of Heavy Metals in Grain
Heavy metal pollution in grains has seriously endangered human health and living environment,cau-sing widespread concern.Electrochemical detection technology has the advantages of high sensitivity,fast analysis speed,simple equipment,low detection cost,and portability,which is expected to meet the needs of on-site rapid detection of heavy metals in grains.In this article,the advantages of mild and rapid pre-treatment technology and screen-printed electrode technology were introduced,and the current application status of electrochemical technolo-gy in the rapid detection of heavy metals in grains was summarized,realizing the simultaneous rapid detection of lead and cadmium in grains,but there were application challenges in the rapid detection of arsenic and mercury.And the feasibility analysis and prospects were focused on the research progress of new purification materials and electrode modification technologies,as well as the application challenges of solving the rapid detection of inorganic arsenic and mercury in grains.It had been found that the use of magnetic nano adsorption materials for the enrichment,purifica-tion,and electrodeposition of inorganic arsenic and mercury in grain samples had significant advantages in achieving rapid detection of inorganic arsenic and mercury in grains using electrochemical technology.This review provided ref-erence for the rapid detection of heavy metals,such as lead,cadmium,inorganic arsenic and mercury,etc.in grain based on electrochemical technology.
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