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Citation: SHAO Kang, LING Qing-Qing, SHI Shu-Xian, YE Shi-Yi, TENG Yuan-Jie, PAN Zai-Fa. Synthesis of Polyacrylic-Tb@SiO₂ Polymer Nanoparticles for Detection of Anthrax Biomarkers[J]. Chinese Journal of Analytical Chemistry, ;2021, 49(5): 726-732. doi: 10.19756/j.issn.0253-3820.201381 shu

Synthesis of Polyacrylic-Tb@SiO₂ Polymer Nanoparticles for Detection of Anthrax Biomarkers

1.
School of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
2.
School of Life Science, Yangtze University, Jingzhou 434000, China

Corresponding author: PAN Zai-Fa, panzaifa@zjut.edu.cn
Received Date: 1 July 2020
Revised Date: 1 February 2021

Fund Project: Supported by the National Natural Science Foundation of China (No. 21804119), the Natural Science Foundation of Zhejiang Province, China (No. LZ18B050002), and the Science and Technology Plan Project of Hubei Province, China (No. 2018CFB388).

A novel poly(acrylic acid)-Tb@SiO₂ (PAA-Tb@SiO₂) fluorescent probe was constructed for detection of 2,6-pyridinedicarboxylic acid (DPA) that was regarded as the potential biomarkers of anthrax. The DPA could coordinate with Tb³⁺ in this probe, which produced an "antenna effect" to enhance the fluorescence intensity of the probe. There was a good linear relationship between fluorescence intensity and DPA concentration in the range of 0.1-20.0 μmol/L, and the correlation coefficient (R²) was 0.9978. The detection limit was 6 nmol/L (3σ). The established method realized the detection of DPA in tap water, the recoveries of the spike were between 94.6% and 116.8%, and the RSD was less than 2%. The method had high sensitivity and good selectivity, and could be used for the analysis of anthrax in environmental water samples.
- Anthracnose,
- Pyridine dicarboxylic acid,
- 2,6-Pyridinedicarboxylic acid,
- Terbium,
- Silica,
- Fluorescent probe
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通讯作者: 陈斌, bchen63@163.com

Synthesis of Polyacrylic-Tb@SiO₂ Polymer Nanoparticles for Detection of Anthrax Biomarkers