利用荧光胺与盐酸美西律的芳伯胺基生成高度荧光衍生物,检测盐酸美西律片盐酸美西律的含量。实验表明荧光胺与盐酸美西律的芳伯胺基生成的荧光衍生物的最大激发波长为397nm,最大发射波长为387nm。利用L9(34)正交试验确定了最佳衍生条件:反应温度25℃,反应时间20min,衍生剂加入量2.60 m L。盐酸美西律含量在0.0160μg·m L^(-1)~0.800μg·m L^(-1)的浓度范围内与相对荧光强度存在线性关系,线性方程为y=3809.4x+2024.1,线性相关系数为0.998,此法可用于检测盐酸美西律片盐酸美西律的含量。
A series of Zr-doped CaTiO3 powders were prepared with the mild co-precipitation method and calcined at 850℃ for 3 h. The as-prepared Zr-doped CaTiO3 samples were characterized by scanning electron microscopy （SEM）...
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A series of Zr-doped CaTiO3 powders were prepared with the mild co-precipitation method and calcined at 850℃ for 3 h. The as-prepared Zr-doped CaTiO3 samples were characterized by scanning electron microscopy （SEM）, X-ray diffraction （XRD）, UV-Vis diffuse reflectance spectra （DRS） and X-ray photoelectron spectra （XPS）. XRD result revealed the presence of single perovskite phase of CaTiO3. UV-Vis diffusive reflection spectra of Zr-doped CaTiO3 indicated that the absorbance obviously increased in the visible light irradiation. XPS analysis showed that two types of oxygen existed on the photocatalyst surface, including lattice oxygen and absorbed oxygen. Their photocatalytic activity in the case of the degradation of methyl orange in water and photoelectrochemical activity were also tested. The 5%Zr-doped （mole fraction） CaTiO3 sample showed the highest photocatalytic activity. The enhanced photocatalytic activity was ascribed to the change of the lattice structure, existence of oxygen vacancies and increase of the photogenerated charge separation efficiency.
将合成的立方体纳米氧化亚铜用于修饰玻碳电极,在其上固定葡萄糖氧化酶,构建了高灵敏的安培型葡萄糖生物传感器。采用X射线衍射（XRD）、扫描电镜（SEM）对合成的立方体纳米氧化亚铜及其修饰电极进行了表征。结果表明,合成的纳米氧化亚铜为均匀的立方体形状。采用循环伏安法（CV）、交流阻抗谱（EIS）、差分脉冲伏安法（DPV）及计时电流法（CA）考察了修饰电极的电化学行为。在含0.1 mmol/L葡萄糖的磷酸盐缓冲溶液（p H 7.4）中研究了立方体纳米氧化亚铜修饰电极的循环伏安（CV）响应,实验结果表明,此修饰电极对葡萄糖显示出良好的电催化性能。DPV响应电流与葡萄糖的浓度在5.0×10;.0×10;mol/L范围内呈良好的线性关系,线性相关系数R;=0.9983,检出限为6.8×10;mol/L（S/N=3）。CA实验结果表明,尿酸、抗坏血酸、D-果糖对传感器不产生干扰。本传感器具有较好的重现性和稳定性,可用于实际样品中葡萄糖的检测。
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