Electrochemical behavior of armillarisin amber acid ester and its determination

OBJECTIVE To investigate the electrochemical behavior of armillarisin amber acid ester(AAAE) by voltammetry at a glassy carbon electrode.And a method of differential pulse voltammetry(DPV) for determination of AAAE was developed.METHODS The electrochemical behavior of AAAE was studied by three-electrode-system(GCE as the working electrode,SEC as the reference electrode,and Pt wire served as the counter electrode).The pH 4.75 NaAC buffer solution was serviced as supporting electrolyte,the content of AAAE in the injection was determined by differential pulse voltammetry.RESULTS The relationship between oxidation peak current and the concentration of AAAE was linear in the range of 5.0×10-7-2.0×10-5 mol·L-1.The detection limit was 5.0×10-8 mol·L-1.CONCLUSION The method was proved to be accurate,sensitive and reliable.It is suitable for the determination of AAAE in AAAE injection.