Table 2 Comparison between present results and the certified values of standard reference materials (mg kg -1 )
From: Transfer of metals from soil to vegetables and possible health risk assessment
Elements | Soil (Montana- 1) | Plant (spinach) | ||||
|---|---|---|---|---|---|---|
Results obtained | Certified values | Error | Results obtained | Certified values | Error | |
K | 21113 | 21700 | 2.71 | 27729 | 29030 | 2.26 |
Ca | 9136 | 9640 | 5.23 | 14483 | 15270 | 4.92 |
Mn | 2128 | 2140 | 0.56 | 69.33 | 75.90 | 0.76 |
Fe | 39685 | 43200 | 8.14 | - | - | - |
Ni | 8.67 | 8.0 | −8.38 | - | - | - |
Cu | 3409 | 3420 | 0.32 | 13.30 | 12.20 | −8.98 |
Zn | 4179 | 4180 | 0.02 | - | - | - |
As | 1441 | 1540 | 6.43 | 0.035 | 0.038 | 9.21 |
Se | 1.2 | 1.0 | −20.0 | 0.053 | 0.050 | 6.00 |
Pb | 5382 | 5520 | 2.5 | - | - | - |