Table 1.
sample | OTA added (ng/mL) | OTA found (ng/mL), proposed method | recovery, proposed method | OTA found (ng/mL), HPLC-MS method | relative error |
---|---|---|---|---|---|
1 | 300 | 279.2 | 93.1% | 298.3 | −6.4% |
2 | 10 | 10.83 | 108.3% | 10.65 | +1.7% |
3 | 0.1 | 0.1034 | 103.4% | 0.1032 | +0.2% |