Table 5.
Percent recovery of reference material by XRF (Expected Value)
| 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 |