A recycled Tb-MOF fluorescent sensing material for highly sensitive and selective detection of tetracycline in milk

被引：67

作者：

Liu, Xinfang ^{[1
]}

Ma, Qinqin ^{[1
,2
]}

Feng, Xun ^{[1
]}

Li, Rongfang ^{[1
]}

Zhang, Xiaoyu ^{[2
]}

机构：

[1] Luoyang Normal Univ, Coll Chem & Chem Engn, Henan Key Lab Funct Oriented Porous Mat, Luoyang 471934, Peoples R China

[2] Henan Univ Sci & Technol, Coll Food & Bioengn, Luoyang 471022, Peoples R China

来源：

MICROCHEMICAL JOURNAL | 2021年 / 170卷

基金：

中国国家自然科学基金;

关键词：

Metal-organic framework; Fluorescence sensing material; Recycled; Tetracycline; Milk; METAL-ORGANIC FRAMEWORK; RESPONSIVE LUMINESCENT SENSOR; COORDINATION POLYMERS; ANTIBIOTICS; VERSATILE; LIGANDS; FE3+;

D O I：

10.1016/j.microc.2021.106714

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel three-dimensional terbium metal-organic framework (Tb-MOF) sensing material has been synthesized by hydrothermal method and applied in fluorescent detection of tetracycline (TC) in milk. The sensing material could emit strong green fluorescence with a long fluorescence lifetime (906.48 +/- 1.49 mu s), which could be sensitively and selectively quenched by TC aqueous solution. Meanwhile, it had the characteristics of fast response (2 min), low detection limit (184 nmol/L), wide linear range (0-100 and 100-244 mu mol/L) and recyclable luminescence sensing during TC detection. The luminescence quenching mechanism was mainly derived from the inner-filter effect and energy transfer from ligand to Tb3+ ion. Furthermore, satisfactory recoveries of 93.5-104.2% were obtained in TC spiked raw milk and pasteurized milk samples, suggesting the potential application of Tb-MOF in the detection of TC in food engineering.

引用

页数：7

共 45 条

[31] Lanthanide-Based Coordination Polymers for the Size-Selective Detection of Nitroaromatics [J].