Table 5 Percent recovery of reference material by XRF (Expected Value)
From: Evaluation of heavy metals content in dietary supplements in Lebanon
|  | Cu (μg/g) | Fe (μg/g) | Mn (μg/g) | Se (μg/) | Ti (μ/g) | Zn (μg/g) |
|---|---|---|---|---|---|---|
Tomato leave Certified (NIST 1573a) | 4.7 ± 0.14 | 368 ± 7 | 246 ± 8 | 14.89 ± 0.27 | - | 30.9 ± 0.7 |
Measurement | 4.42 ± 0.18 | 371 ± 9 | 242 ± 10 | 13.12 ± 0.31 | - | 31.2 ± 0.8 |
% Recovery | 94 | 101 | 98 | 88 | - | 101 |
Soil Certified (NIST 2586) | - | 51610 ± 890 | 1000 ± 18 | - | 6050 ± 660 | 352 ± 16 |
Measurement | - | 48513 ± 700 | 903 ± 27 | - | 5627 ± 500 | 335 ± 20 |
% Recovery | - | 94 | 90 | - | 93 | 95 |