| Metal | Total mg/kg | Total fractions continuous method mg/kg | Total fractions lyophilization method mg/kg | % mistake continuous method | % mistake lyophilization method |
| Cu | 50.04 | 54.142 | 48.875 | 8.19 | 2.32 |
| Fe | 35547.70 | 46825.64 | 37516.73 | 31.72 | 5.54 |
| Mn | 208.71 | 220.64 | 205.86 | 5.72 | 1.37 |