ABSTRACT
A simple and cost-effective approach for preparation of polyethyleneimine-functionalised graphene (PEI-GR) was proposed for constructing a voltammetric sensor platform. This voltammetric sensor showed strong accumulation ability and excellent voltammetric response for puerarin. The electrochemical behaviour of puerarin was investigated systematically in 0.1 mol L−1 H2SO4 (pH 0.8). Under the optimised conditions, a lower detection limit of 8 × 10−8 mol L−1 (S/N = 3) and a wide linear detection range from 3 × 10−7 to 1 × 10−5 mol L−1 were achieved by the linear sweep voltammetry (LSV). Additionally, this effective method was proved to be suitable for the determination of puerarin in Puerarin injection with satisfactory results.
Disclosure statement
No potential conflict of interest was reported by the authors.