Table 1.
Comparison of the mineral content results obtained using different analytical methods (ED-XRF qualitative–quantitative, ED-XRF with standard sample, and ICP-MS/ICP-OES) for bee pollen samples collected on 2 June 2019 (P2) and 20 July 2019 (P5).
| Mineral | Method | Sample (Date) | Mean + SD [mg/kg] | Method | Mean + SD [mg/kg] | Method | Mean [mg/kg] |
|---|---|---|---|---|---|---|---|
| Manganese | ED-XRF Qual-Quantitative analysis without standard sample | P2 (2 June 2019) | 37.0 ± 7.1 | ED-XRF Fundamental Parameter method with standard sample | 53.3 ± 11.8 | ICP-MS | 62.0 |
| Copper | 8.1 ± 0.2 | 4.6 ± 0.2 | 5.7 | ||||
| Zinc | 26.8 ± 4.9 | 26.6 ± 0.2 | 31.0 | ||||
| Potassium | 4115.1 ± 263.9 | 4611.6 ± 379.6 | ICP-OES | 4600.0 | |||
| Calcium | 1131.4 ± 133.3 | 1376.5 ± 143.8 | 1500.0 | ||||
| Iron | 48.0 ± 5.4 | 63.9 ± 2.2 | 49.0 | ||||
| Phosphorus | 3085.9 ± 69.7 | 4482.5 ± 490.5 | 4600.0 | ||||
| Sulfur | 2397.8 ± 224.4 | 2547.7 ± 385.7 | 2700.0 | ||||
| Chlorine | 375.1 ± 72.7 | - | - | ||||
| Manganese | ED-XRF Qual-Quantitative analysis without standard sample | P5 (20 July 2019) | 15.7 ± 2.1 | ED-XRF Fundamental Parameter method with standard sample | 17.0 ± 0.7 | ICP-MS | 16.0 |
| Copper | 8.6 ± 0.6 | 4.23 ± 0.4 | 4.4 | ||||
| Zinc | 48.5 ± 0.4 | 39.0 ± 1.9 | 41.0 | ||||
| Potassium | 4146.3 ± 27.3 | 4600.7 ± 71.6 | ICP-OES | 4400.0 | |||
| Calcium | 608.3 ± 14.1 | 697.9 ± 24.1 | 680.0 | ||||
| Iron | 63.2 ± 4.8 | 67.2 ± 8.2 | 68.0 | ||||
| Phosphorus | 2551.1 ± 80.1 | 3475.5 ± 124.4 | 3500.0 | ||||
| Sulfur | 1915.2 ± 16.6 | 1907.5 ± 44.3 | 1900.0 | ||||
| Bromine | 19.1 ± 2.7 | - | - | ||||
| Chlorine | 615.1 ± 19.4 | - | - |