Table 4.
Percent recovery of arsenic species (AsV, MMA, AsIII, DMA) in spiked samples
| Spiking concentration (µg/L) | Analyte | Unspiked sample concentration (µg/kg) | Spiked sample concentration (µg/kg) |
Recovery (%) |
|---|---|---|---|---|
| 3 | AsV | 38.6 ± 1.4 | 67.3 ± 1.3 | 95.7 ± 6.4 |
| MMA | 29.0 ± 2.5 | 55.3 ± 2.3 | 87.7 ± 11.3 | |
| AsIII | 53.4 ± 0.6 | 86.0 ± 0.3 | 108.7 ± 2.2 | |
| DMA | 162.9 ± 2.6 | 193.7 ± 0.8 | 102.7 ± 9.1 | |
| 8 | AsV | 38.6 ± 1.4 | 113.8 ± 1.8 | 94.0 ± 2.9 |
| MMA | 29.0 ± 2.5 | 97.5 ± 2.0 | 85.6 ± 4.0 | |
| AsIII | 53.4 ± 0.6 | 132.8 ± 1.5 | 99.3 ± 2.0 | |
| DMA | 162.9 ± 2.6 | 238.2 ± 2.5 | 94.1 ± 4.5 | |
| 15 | AsV | 38.6 ± 1.4 | 168.7 ± 1.3 | 86.7 ± 1.3 |
| MMA | 29.0 ± 2.5 | 140.8 ± 1.8 | 74.5 ± 2.1 | |
| AsIII | 53.4 ± 0.6 | 194.2 ± 2.8 | 93.9 ± 1.9 | |
| DMA | 162.9 ± 2.6 | 290.6 ± 3.3 | 85.1 ± 2.8 |