A new method for the determination of Cd in the water with a wireless magnetoelastic immunosensor was introduced. In the method, the specific binding of antigen with the antibody made precipitation adhere to the surface of the immunosensor and resulted in a decrease in the resonance frequency of the magnetoelastic foil. The shift of the resonance frequency was related to the concentration of Cd. The influence of some factors such as polyethylene imine dosage, glutaraldehyde dosage and reaction time on the determination was discussed. At the opt...
