Trace metal ion detection device based on multi-auxiliary electrode stripping voltammetry

The utility model relates to a trace metal ion detection device based on a multi-auxiliary electrode stripping voltammetry. The trace metal ion detection device comprises a computer workstation, an electrochemical analyzer, a four-electrode system, a change-over switch, an electrochemical detection pool and a magnetic stirrer, wherein the electrochemical analyzer is connected with the computer workstation; the four-electrode system is connected with a three-electrode wiring terminal of the electrochemical analyzer through the change-over switch; the magnetic stirrer is positioned below the electrochemical detection pool, and solution in the electrochemical detection pool is stirred by magnetons. The trace metal ion detection device has the most obvious characteristic that auxiliary electrodes are double electrodes, namely an auxiliary electrode and an additional auxiliary electrode and forms the four-electrode system with a working electrode and a reference electrode. Thus, the trace metal ion detection device has the benefits that the problem that the auxiliary electrode is polluted can be effectively solved, the repeatability, the stability and the reliability of continuous determination are improved, and an automation system can perform continuous determination conveniently.