Voltammetric determination of heavy metals in the laundry soap

The content of Zn, Cd, Pb, Cu and Hg in samples of 8 firm liquid laundry soap was determined by the stripping voltametry method. It was established that in the studied samples of laundry soap the content of Zn is the most (68-95 mg/kg), and the content of Cd is the least (0,02-0,10 mg/kg). The content of Pb is 18-50 times less than the Zn content. The content of Hg in the laundry soap samples ranges from 0,12 to 4,93 mg/kg.