Element White Milk Dark
Al <LOQ 25.35 ± 1.40 26.7 ± 2.86
Ba 0.46 ± 0.06 1.76 ± 0.13 5.63 ± 0.34
Cu 0.17 ± 0.01 3.30 ± 0.02 12.18 ± 0.20
Fe 1.60 ± 0.23 56.44 ± 0.63 77.06 ± 1.81
Mn 0.23 ± 0.01 4.03 ± 0.04 13.36 ± 0.18
Sr 1.10 ± 0.07 2.54 ± 0.07 6.04 ± 0.34
Zn 3.89 ± 0.19 10.65 ± 0.04 23.06 ± 0.34
As* 6.52 ± 0.29 12.37 ± 0.56 14.06 ± 1.11
Co* <LOQ 87.50 ± 1.72 358.68 ± 16.37
Cr* <LOQ 456.73 ± 12.45 515.59 ± 23.65
Ni* 7.6 ± 1.1 195.97 ± 5.36 815.43 ± 15.37
Se* 17.62 ± 2.31 40.46 ± 1.67 70.77 ± 1.48
V* 9.70 ± 0.42 50.46 ± 2.77 76.37 ± 6.44

 * Total content in µg/kg

Table 3: Total content (mg/kg ± s, n=3) of essential and non-essential elements in white, milk and dark chocolate.