木香荧光探针的制备及其对苦味酸的检测

Synthesis of Aucklandiae Radix Fluorescent carbon Probe and its Detection of Picric acid

以天然中药材木香为原料,利用燃烧法制备出一种对苦味酸(PA)有高选择性的荧光探针,其线性范围在8×10^(-7) mol/L~1.4×10^(-5) mol/L,检出限为0.22μmol/L.该探针在pH=6.4,碳点量为400μL且响应时间为3min条件下,对苦味酸(PA)的识别展现出良好的特异性,且其他金属离子(Mg^(2+)、Zn^(2+)、Ni^(2+)、Hg^(2+)、Ca^(2+)、Na^(+)、Co^(2+)、Mn^(2+)、Al^(3+))的存在对苦味酸(PA)的检测不造成干扰,证明抗干扰性能良好.

A fluorescent probe was prepared by combustion method using traditional Chinese medicine Aucklandiae Radix for detecting PA with high selectivity.The fluorescent intensity of CDs had good linear relationship with PA in the range of 8×10^(-7) mol/L~1.4×10^(-5) mol/L,and the detection limit was 0.22μmol/L.Under certain conditions(pH=6.4,CDs=400μL,response time=3min),the probe showed good specificity in PA recognition and other metal ions(Mg^(2+),Zn^(2+),Ni^(2+),Hg^(2+),Ca^(2+),Na^(+),Co^(2+),Mn^(2+),Al^(3+))did not interfere with PA detection.