Table 5 Mean percentage recoveries of geosmin and 2-MIB from spiked raw water samples extracted using a hydrophilic C18 μSPE cartridge, 2-propanol elution solvent and GC–MS detection.
Water type | Spiked concentration (ng L−1) | Geosmin | 2-MIB |
|---|---|---|---|
Recovery ± RSD (%) | Recovery ± RSD (%) | ||
Oswestry reservoir | Blank | N.D. | N.D. |
10 | 97.9 ± 3.8 | 96.3 ± 2.3 | |
50 | 98.4 ± 4.4 | 96.12 ± 4.0 | |
100 | 97.8 ± 2.6 | 98.2 ± 2.1 | |
200 | 100.0 ± 2.6 | 96.0 ± 1.2 | |
Huntington river | Blank | N.D. | N.D. |
10 | 97.1 ± 2.4 | 96.6 ± 4.6 | |
50 | 97.2 ± 3.0 | 95.1 ± 7.0 | |
100 | 96.9 ± 1.8 | 95.8 ± 3.4 | |
200 | 97.7 ± 1.9 | 96.7 ± 1.9 |
