Abstract：
Discrimination of segmented Baijiu contributes to stabilizing the quality of products, improving revenue-generating effects. A fluorescence sensor array is constructed based on four fluorescence characteristic peaks of terbium@lanthanum metal-organic framework (Tb@La-MOF). Its fluorescence signal is specifically quenched, when Tb@La-MOF encounters acetaldehyde. Acetaldehyde may inhibit the absorption of energy by the organic ligands in MOF, or/and hydrogen bonding with -COOH on the organic ligand, resulting in energy transfer to Tb(Ⅲ). According to this, the quantitative detection of acetaldehyde is completed with a range of 10-300 μM and the detection limit of 5.5 μM. At the same time, it has been successfully applied to the discrimination of segmented Baijiu. Fifteen segmented from three wine cellars are 100 % discriminated with the combined processing of sensor arrays and analytical methods. Accuracy, simplicity, and low-cost are highlights of this fluorescence sensor array, which has considerable potential for application in detection, production, and food field.
摘要：
分段白酒的鉴别有助于稳定产品质量，提高创收效应。基于Tb@镧金属有机骨架（Tb@La-MOF）的四个荧光特征峰，构建了荧光传感器阵列。它的荧光信号被特异性猝灭，当Tb@La-MOF遇到乙醛时。乙醛可以抑制MOF中有机配体对能量的吸收，或/和与有机配体上的-COOH氢键合，导致能量转移到Tb(Ⅲ)。据此,乙醛的定量检测在10-300μM的范围内完成，检测极限为5.5μM。同时,已成功应用于分段白酒的判别。通过传感器阵列和分析方法的组合处理，可以100％区分三个酒窖中的15个。准确性,简单，低成本是这种荧光传感器阵列的亮点，在检测中具有相当大的应用潜力，生产,和食品领域。
