Research Article
Flow Injection Potentiometric Assay of Hexoprenaline in Its Pure State, Pharmaceutical Preparations, and Biological Samples
Table 6
Statistical treatment of data obtained for the determination of Hexoprenaline using Hx conventional electrodes in comparison with the official method.
| | Hx-PTA | Hx-PMA |
| | Batch | FIA | Batch | FIA |
| Pure solutions | | | | | | | | | | Relative error (%) | 0.13 | 0.15 | 0.07 | 0.22 | value | 2.56 | 2.98 | 3.45 | 4.21 | Slope of regression line | 0.998 | 0.986 | 0.995 | 0.978 | Intercept of regression line | −0.087 | −0.073 | 0.045 | −0.062 |
| | | | | | | | | | | Relative error (%) | 0.05 | 0.13 | 0.09 | 0.24 | value
| 3.78 | 4.12 | 2.68 | 2.49 | Slope of regression line | 0.999 | 0.988 | 0.986 | 0.993 | Intercept of reg. line | 0.012 | −0.023 | −0.031 | 0.009 |
| | | | | | | | | | | Relative error (%) | 0.14 | 0.52 | 0.18 | 0.31 | value
| 4.57 | 3.51 | 2.88 | 3.69 | Slope of regression line | 0.992 | 0.989 | 0.996 | 0.985 | Intercept of regression line | −0.091 | 0.036 | 0.018 | 0.042 |
| Urine | | | | | | | | | | Relative error (%) | 0.09 | 0.12 | 0.24 | 0.06 | value
| 3.74 | 3.92 | 4.53 | 5.26 | Slope of regression line | 0.991 | 0.984 | 0.975 | 0.994 | Intercept of regression line | 0.029 | −0.015 | −0.026 | −0.035 |
| Plasma | | | | | | | | | | Relative error (%) | 0.18 | 0.14 | 0.25 | 0.32 | value
| 2.87 | 3.19 | 3.57 | 2.96 | Slope of regression line | 0.999 | 0.978 | 0.982 | 0.990 | Intercept of regression line | −0.014 | −0.026 | 0.034 | 0.091 |
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: average ± standard error. tailed critical -value. N.B.: for the official method (X ± S.E.) =
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