CAJ | 학술논문

以活性炭为碳源,采用化学氧化结合ZnO包覆的方法制备新结构碳量子点,其稳定性好,荧光量子产率高。结果表明,甲硝唑对鲁米诺-高锰酸钾体系具有增敏作用,同时能有效猝灭碳量子点的荧光,以此建立化学发光法检测甲硝唑片含量。在最佳条件下,化学发光强度与甲硝唑的浓度呈良好的线性,其线性为7.5×10-4~2.5×10-8g/mL,线性相关系数r=0.9996,检测限CL=1.08×10-10g/mL。
이활성탄위탄원,채용화학양화결합ZnO포복적방법제비신결구탄양자점,기은정성호,형광양자산솔고。결과표명,갑초서대로미낙-고맹산갑체계구유증민작용,동시능유효졸멸탄양자점적형광,이차건립화학발광법검측갑초서편함량。재최가조건하,화학발광강도여갑초서적농도정량호적선성,기선성위7.5×10-4~2.5×10-8g/mL,선성상관계수r=0.9996,검측한CL=1.08×10-10g/mL。
ZnO-doped carbon quantum dots ( CQDs ) were prepared by the chemical oxidation of activated carbon followed by zinc acetate impregnation and precipitation. The ZnO-doped CQDs had a stable fluorescence and a high fluorescence quantum yield. The fluorescence of the ZnO-doped CQDs can be quenched by reduction with metronidazole, allowing a flow-injection chemilumi-nescence method to be used to determine the metronidazole content in tablets. Under optimum conditions, there was a good linear relation between the concentration of metronidazole and the intensity of chemiluminiscence. The linear concentration range examined was 7. 5×10-4-2. 5×10-8 g/mL with r = 0. 999 6 and a detection limit of 1. 08×10-10 g/mL.