TY - BOOK AU - Shereen Musa Azab Musa AU - Fekrya Mossad Abouattia , AU - Nada Farouk Atta , TI - Electrochemical biosensor based on nanoparticles modified electrodes / PY - 2012/// CY - Cairo : PB - Shereen Musa Azab Musa , KW - Carbon paste electrode KW - Gold nanoparticles KW - Sensor N1 - Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physical Chemisty; Issued also as CD N2 - A novel and effective electrochemical sensor for the determination of some catecholamine neurotransmitters of interest as well as drugs in 0.04 M universal buffer solution ( pH 7.4 ) is introduced using gold nanoparticles modified carbon paste electrode and gold nanoparticles electrodeposited on Nafion modified carbon paste electrode . The effect of various experimental parameters including , pH , scan rate and accumulation time on their voltammetric response was investigated ER -