5、eof20μg·mL-1~200μg·mL-1(r=0.9999,n=6),andhadbetterrepeatability(RSD=0.129%,n=6);the average recovery of themethod was98.6%(RSD =1.2%,n=6).Conclusion:Theresultsoftheexperimentsshowedthatitisa highsensitivity,accuracymethodwithgoodprecision.Themethodcanbeus