Table 2.
Results of BUP determination in samples enriched with analyte
| Sample | Addition of BUP/μmol L-1 | Concentration determined/μmol L−1 | Mean concentration* ± CI/μmol L−1 | Recovery*/% | RSD/% |
|---|---|---|---|---|---|
| Vistula river water1 | 7.50 |
7.08 7.69 7.41 |
7.39 ± 0.51 | 98.6 | 4.1 |
| Wastewater CRM1 | 37.5 |
37.6 37.8 36.8 |
37.4 ± 0.9 | 99.7 | 1.4 |
| Groundwater CRM1 | 37.5 |
36.6 36.4 35.2 |
36.1 ± 1.3 | 96.2 | 2.1 |
| Urine2 | 250 |
250 250 259 |
253 ± 8 | 102 | 2.0 |
| Blood serum2 | 1000 |
1009 973 997 |
993 ± 31 | 99.9 | 1.8 |
*Mean value (n = 3)
1Result obtained with CSAM
2Results achieved with SISAM