Table 3.
Statistical comparison between the results obtained by the proposed ISE potentiometric method and the official method for determination of PALO in its pure form.
| Parameter | ISE potentiometric methoda | Official methodb | |
|---|---|---|---|
| Ionophore-free sensor | Ionophore-doped sensor | ||
| Mean | 99.69 | 100.04 | 100.33 |
| SD | 0.65 | 0.35 | 0.38 |
| SE | 0.21 | 0.12 | 0.22 |
| n | 9 | 9 | 3 |
| Variance | 0.42 | 0.12 | 0.14 |
| Student’s t-test | 2.10 (2.23)c | 1.16 (2.23)c | NA |
| F-test | 3 (19.37)c | 1.17(4.46)c | NA |
a9 determinations of 3 concentration levels by the proposed ISE method.
b3 determinations of 3 concentrations by USP 41, HPLC–UV method for PALO.
cThe values in parentheses are the corresponding tabulated values of t and F at p = 0.05.