Some models have been established to calculate the static dielectric constant of aqueous electrolyte solution.Others models based on the fitting parameters in Debye's equation by a lot of experiments and consequently were used to calculate the real and imaginary part of the complex effective permittivity of few aqueous electrolyte solutions

such as saline water and seawater.Here

the effective permittivity for various aqueous electrolyte solutions at microwave frequency has been gotten by the experiments

and we introduce the complex impact factor of different ion based on the experimental data and proposed a new model to calculate the complex effective permittivity of aqueous electrolyte solutions at microwave frequency.The calculated results are compared with the measured results at 915MHz and 2450MHz.The good agreement can be observed.This study offers base to calculate the distribution of electromagnetic field and temperature in the chemical reaction in dilute solution irradiated by microwaves and high potential applications of the method in the fields of geophysics

remote sensing

and inspection of water pollution.