The rapid development of modern industrial technologies has resulted in the emission ofthree wastes in large quantities,which has led to environmental pollution,ecological damag-e,and threats to human health.The challenges facing nature are becoming more and more sev-ere.Among the many pollutants,heavy metal ion pollution has attracted widespread attention due to its great harm,wide range,and enrichment.Therefore,the study of rapid,simple,sensit-ive and on-line detection methods for heavy metal ions has bec...