Synthesis of nano-sized hydrogen phosphate-imprinted polymer in acetonitrile/water mixture and its use as a recognition element of hydrogen phosphate selective all-solid state potentiometric electrode.

摘要: Herein, a new recipe is introduced for the preparation of hydrogen phosphate ion-imprinted polymer nanoparticles (nano-IIP) in acetonitrile/water (63.5:36.5) using phosphoric acid as template. The nano-IIP obtained was used recognition element carbon paste potentiometric sensor. IIP electrode showed Nernstian response to anion; whereas, non-imprinted (NIP)-based had no considerable sensitivity anion. presence both methacrylic and vinyl pyridine structure, well optimization functional monomers-template proportion, found be important observe sensing capability electrode. dynamic linear range 1 × 10-5 -1 × 10-1  mol L-1, slope 30.6 ± (0.5) mV decade -1 , time 25 seconds, detection limit 4.0 × 10-6  mol L-1 . utility electrodes checked by titration with La3+ solution.