Table 1.
Recovery efficiency and regression equation determined by different concentrations of nitenpyram for the analytical method evaluation.
| Append concentration (mg·L−1) | Detected concentration | Recovery efficiency (%) | Regression equation |
|---|---|---|---|
| 20 | 19.87 ± 0.53 | 99 | |
| 40 | 38.89 ± 1.45 | 97 | y = 12.263x + 1.0012 |
| 60 | 57.99 ± 0.32 | 97 | R2 = 0.9999 |
| 80 | 77.82 ± 2.15 | 97 | |
| 100 | 94.08 ± 2.15 | 96 |
Regression equation was determined by HPLC using different concentrations of standard nitenpyram; y, nitenpyram concentration; x, the peak area of HPLC; R2, correlation coefficient of the regression equation.