基于AuNPs-多孔碳-IL复合材料的电化学法检测亚硝酸盐  

Detection of nitrite by the electrochemical method based on AuNPsporous carbon-IL composite materials

作　　者：刘晓伟 王静静 郭芳 LIU Xiao-wei;WANG Jing-jing;GUO Fang(Changyuan Cuisine Vocational and Technical College,Xinxiang 45340)

机构地区：[1]长垣烹饪职业技术学院,新乡453400

出　　处：《分析试验室》2018年第10期1193-1196,共4页Chinese Journal of Analysis Laboratory

摘　　要：制备金-多孔碳-离子液体(AuNPs-多孔碳-IL)纳米复合材料,用以修饰玻碳(GC)电极,制得AuNPs-多孔碳-IL/GC传感器,对食品中的亚硝酸盐进行检测。在最优条件下,NaNO_2浓度在2.00×10^(-9)~8.00×10^(-8)mol/L和8.00×10-7~8.00×10^(-4)mol/L时,与峰电流呈良好的线性关系,线性方程分别为:I=22.48122c+1.05555,(R^2=0.998);I=0.05322c+3.81848(R2=0.999)。检出限为8.86×10^(-9)mol/L。对实际样品中的NaNO_2进行检测,得到样品平均回收率在95.5%~108.9%范围内。The AuNPs-porous carbon-IL was prepared to modify GC electrode, and fabricate the AuNPs- porous carbon-IL/GC biosensor, which was used to detect nitrite in food. For the detection of nitrite, the as-prepared biosensor showed wide linear ranges of 2. 00 × 10 -9 - 8. 00 × 10 -8 mol/L and 8. 00 × 10 -7 8. 00 ×10 -4mol,/L, with the linear equation of I = 22. 48122c ＋ 1.05555 （ R2 = 0. 998） and I = 0. 05322c ＋ 3. 81848 （R2 =0. 999）, respectively, The detection limit of nitrite was 8. 86 x 10 -9moL/L. The sensor could be used for the detection of nitrite in different real samples with recovery rate of 95. 5% -108. 9%.

关 键 词：AuNPs-多孔碳-IL GC电极 NaNO2 

分 类 号：R991[医药卫生—毒理学]