Stripping voltammetry determination of heavy metals in the sugar

By stripping voltammetry method it was established that all 8 studied sugar samples contain Zn (1,1-2,9 mg/kg) and Hg (0,001-0,009 mg/kg), and the Zn-content exceeds more than 300 times Hg content or more. Lead was found in 7 out of 8 sugar samples (0,1-0,49 mg/kg), while the copper - 3 (0,06-0,31 mg/kg). Cadmium is not detected in any of the investigated samples of sugar. The content of Zn, Pb, Cu, and Hg in sugar samples does not exceed the requirements regulated by state standards GOST 21-94.