The results obtained demonstrated that a height of the paraquat peak increased linearly as a consequence of the increase of amplitude values up to 50 mV. According to this value, the paraquat signal remained stable due to peak broadening and the signal noise increased. The pulse height was studied in the range from 1 to 50 mV. The stripping signal underwent an increase up to 4 mV, where the highest peak intensity was obtained. A slight decrease of the signal was observed after 4 mV.