Sea water heavy metal pollutant on site analyzer

The utility model relates to a heavy metal contaminant field analyzer. The prior equipment has high cost, large power consumption and large size and is not suitable for field detection. The heavy metal contaminant field analyzer comprises a PC computer, a detection circuit and a three-electrode electrochemical reaction device, which are sequentially connected with each other. A D/A conversion module, a potentiostat module, a current-voltage conversion module and an A/D conversion module in the detection circuit are sequentially connected with each other; the D/A conversion module, the A/D conversion module and an LCD module are connected with a microprocessor module; and a serial communication module is inter-connected with the microprocessor module. The serial communication module is connected with the PC computer, the potentiostat module is connected with a reference electrode and a counter electrode of the three-electrode electrochemical reaction device, and the current-voltage conversion module is connected with a work electrode of the three-electrode electrochemical reaction device. The heavy metal contaminant field analyzer has the advantages of small size, low cost and high sensitivity, capability for simultaneously detecting various kinds of heavy metals and suitability for real-time field seawater detection.