%0 Conference Proceedings %T Bilayer composite of phosphomolybdate doped polypyrrole and nanodiamond at a disposable gold chip as an electrochemical sensor for propylparaben %A Ashraf, Narjes %A Hatami, Elaheh %J بیست و ششمین کنفرانس شیمی تجزیه ایران %D 2019