The invention relates to detection on heavy metal ions, and particularly relates to a sensor based on an asymmetric polymer film as well as a detection method and applications thereof. An ionometer is respectively connected with a reference electrode and a working electrode by virtue of leads, a working electrode and the reference electrode are inserted in a to-be-detected sample pool, the working electrode is composed of an ion selective electrode and a rotating disk electrode inserted in the ion selective electrode, the ion selective electrode is a polyvinyl chloride tube, and an asymmetric polymer film is adhered to the bottom of the polyvinyl chloride tube; and the asymmetric polymer film is composed of a polymer film substrate and a lipophilic ion exchange bed. According to the invention, an asymmetric polymer film ion selective electrode is adopted, so that the sensitivity of heavy metal ion detection is remarkably improved, and the detection limit is reduced; and through combining with a rotating disk electrode technology, the detection time is shortened.
; 梁荣宁
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