新型BODIPY类荧光探针及其对食品中Hg2+检测的应用

摘要

设计并合成了一种氟硼吡咯(BODIPY)类的Hg2+荧光淬灭型荧光探针SOH,通过紫外-可见滴定和荧光滴定等光谱性能测定.结果表明:纯乙腈体系中,探针SOH遇Hg2+会产生由黄色变为红色的明显颜色变化和荧光淬灭现象;多离子共存下,对Hg2+具有较高的选择性和竞争性;Hg2+浓度在1~13 μmol/L范围内线性相关系数为0.994,检出限为0.53 μmol/L,用本方法对矿泉水、大米和鮟鱇鱼样品进行加标回收实验,回收率为94.36%~107.80%,满足痕量Hg2+分析的要求.%We designed and synthesized a novel BODIPY-based fluorescence probe to detect Hg2+.We studied the spectral performance by UV-vis and fluorescence spectra.The probe in acetonitrile displayed a distinct color change from yellow to red upon addition of Hg2+and fluorescence quenching to Hg2+with good selectivity over other competitive cations.It exhibited a dynamic response concentration range of Hg2+from 1 to 13 μmol/L,the linear correlation coefficient was 0.994 and the corresponding limit of detection (LOD)was calculated to be 0.53 μmol/L.The spiked recovery rates for mineral water,rice and anglerfish were from 94.36% to 107.80%.The developed method meets the trace analytical requirement.