For the sensitive determination of tryptophan(Try) with electrochemical technique,a poly(alizarin red)(PAR) film electrode was fabricated by electropolymerization of alizarin red on a glassy carbon electrode with optimized experimental parameters for the electropolymerization.Cyclic voltammetry(CV) and linear sweep voltammetry(LSV) were used to study the electrochemical behavior of tryptophan(Try) on this modified glassy carbon electrode.Parameters such as voltammetric sweeping segments for the electrochemi...