Sensitive fluorescent determination of uranyl ions using a terbium (III) 4-sulfocalix[4]arene probe
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY(2024)
摘要
Uranium, regarded as an important element in nuclear fission energy schemes, is harmful to public health owing to its high toxicity and radioactivity. Herein, a novel fluorescent probe (SC4A@Tb3+) was developed using a one-step liquid-phase method with 4-sulfocalix[4]arene (SC4A) and rare earth-metal ions (Tb3+) as precursors to realize the accurate monitoring of uranyl ion (UO22+) detection. Based on the dynamic quenching mechanism, the SC4A@Tb3+ fluorescence quenching sensor for UO22+ detection was in the linear range of 0-0.36 mu M, with a detection limit of 20 mu g center dot L-1, and successfully quantified UO22+ in water and human serum samples. These results suggest that SC4A@Tb3+ is a potential sensing material for UO22+ detection.
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关键词
Calixarene,Rare-earth ions,Uranyl ions,Fluorescent probe,Terbium (III)
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