铋膜电极伏安法测定苏丹红Ⅰ号  

Determination of sudanⅠusing bismuth-film electrode by voltammetry

作　　者：杜美菊[1] 

机构地区：[1]商丘师范学院化学系,河南商丘476000

出　　处：《化学研究与应用》2007年第7期838-840,共3页Chemical Research and Application

基　　金：河南省自然科学基金项目(0511020300)

摘　　要：The electrochemical of sudanⅠat an bismuth-film electrode has been studied.In the buffer solution of HAc-NaAc and ethanol(pH = 4.0),sudanⅠproduces an reductive peak at-0.5V,peak current showed a well linear relationship with concentration of sudanⅠin the range of 1.7×10-6mol/L～5.9×10-5mol/L,and to regression equation to ip =4.862+ 7.374C(×10-6mol/L),r=0.9978。 The limit of the detection is 8.1×10-7mol/L.This method can be applied to detemine sudanⅠ.The electrochemical of sudan Ⅰ at an bismuth - film electrode has been studied. In the buffer solution of HAc - NaAc and ethanol（pH = 4.0） ,sudan Ⅰ produces an reductive peak at -0.5V,peak current showed a well linear relationship with concentration of sudan Ⅰ in the range of 1.7× 10^-6mol/L -5.9 × 10^-5mol/L,and to regression equation to ip =4. 862 ＋ 7. 374C（ × 10^-6 tool/L） ,r =0. 9978, The limit of the detection is 8.1 × 10^-7mol/L. This method can be applied to detemine sudan Ⅰ.

关 键 词：苏丹红Ⅰ号 铋膜电极 循环伏安法 差分脉冲伏安法 

分 类 号：O657.14[理学—分析化学]