**5. Conclusion**

The heavy metals like cadmium, arsenic and lead results in the bioaccumulation and causes adverse effect on gastrointestinal, nervous system, kidney and immune system, and also causes cancer. The detection of heavy metals and their ions is of utmost important in this world. As we discussed, cyclic voltammetry is one of the potential electrochemical method used to detect the heavy metals and their ions easily and quickly. The discussed method is one of the better method and exhibit excellent sensitivity, selectivity, good current response, and possible detection of multi heavy metals simultaneously compared to other electrochemical methods. The recent developments, challenges and future prospectus of the electrochemical detection of heavy metals by cyclic voltammetry is successfully discussed in this chapter. The electrochemical methods are more accurate, simple, robust methods compared to other traditional methods.
