No | Concentration (ppm) | Peak area | Mean | Standard deviation | Percentage of RSD (%) |
1 | 0.4 | 16.0614 | 15.99903 | 0.059329 | 0.370827 |
2 | 0.4 | 15.9924 | |||
3 | 0.4 | 15.9433 |