胆碱氧化酶功能化室温磷光量子点的制备及其对氯化胆碱的定量检测 |
吕金枝, 张鑫浩 |
Preparation of Room⁃Temperature Phosphorescence Quantum Dots Functionalized with Choline Oxidase and Quantitative Determination of Choline Chloride |
Jin-Zhi LYU, Xin-Hao ZHANG |
图4 (A) 随着氯化胆碱(Cho)浓度的增加(0、0.05、0.1、0.2、0.5、1.0、2.0、10、20、30和40 mmol/L),ChOx RTP QDs的 RTP强度变化光谱图(插图:ΔRTP/RTP0与浓度倒数图及线性拟合); (B) ChOx RTP QDs检测氯化胆碱的标准曲线; (C) pH值对ΔRTP/RTP0的影响; (D) 温度对ΔRTP/RTP0的影响 |
Fig.4 (A) Variation spectra of RTP intensity of ChOx RTP QDs with the increase of choline chloride concentration (0, 0.05, 0.1, 0.2, 0.5, 1.0, 2.0, 10, 20, 30 and 40 mmol/L). Insets: plot of ΔRTP/RTP0vs.reciprocal concentration and linear fitting; (B) Standard curve of choline chloride detection based on ChOx RTP QDs; (C) Influences of pH on ΔRTP/RTP0; (D) Influences of temperature on ΔRTP/RTP0 |