The FI of different concentration standard ammonium solution in existence and absence of EDTA.
|Concentration of ammonium (, mol/L)||FI in existence of EDTA||FI in absence of EDTA|
|The relationship between FI and ||FI = ||FI = |
|Corresponding parameters|| || |
| ||0.9973 ( 0.0001)||0.9970 ( 0.0001)|
| The standard deviation of the intercept||12.65||11.90|
| The standard deviation of the slope||41.32||38.87|