Table 5. Standard Addition Recovery and Precision of Experimental Methoda.
base value (mg/g) | amount added (mg/g) | determined value (mg/g) | recovery (%) | RSD (%, n = 5) |
---|---|---|---|---|
6.83 | 1.9 | |||
6.83 | 2.73 | 9.51 | 98.0 | 1.3 |
6.83 | 5.37 | 12.25 | 100.9 | 1.5 |
6.83 | 8.17 | 15.38 | 104.7 | 4.1 |
Note: RSD, relative standard deviation.