The invention relates to the field of electrochemical sensors, and particularly relates to an alloy electrode electrochemical sensor for quickly detecting trace heavy metals. The electrochemical sensor specifically comprises an alloy working electrode, a reference electrode and an auxiliary electrode, wherein the working electrode, the reference electrode and the auxiliary electrode are respectively connected to a control potential rectifier by leads; and the working electrode is made of tin-bismuth alloy. The detection method is implemented by inserting the three electrodes into a sample to be detected, then detecting the concentration of heavy metal ions in the sample to be detected through stripping voltammetry. The electrochemical sensor provided by the invention is simple in process, low in cost, high in selectivity and sensitivity and good in stability, and can be widely applied to the quick field detection and daily monitoring of heavy metal ions in fresh water, sea water, food and body fluids.
; 张丽; 庄建梅; 秦伟
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