| Autor: |
TAO Jian, CHENG Jie, SUN Zhiyuan, YIN Yuyun, YANG Jingjing, ZHANG Rufan, SUN Pengjuan, CAI Shuo, QU Lingbo, YANG Ran |
| Jazyk: |
English<br />Chinese |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Shipin Kexue, Vol 45, Iss 16, Pp 255-261 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1002-6630 |
| DOI: |
10.7506/spkx1002-6630-20230705-041 |
| Popis: |
Based on the click chemical reaction between hybrid rhodamine and thiol compounds and the declick chemical reaction caused by the coordinative interaction between thiol compounds and mercury ions, a ternary system of coumarin hybrid rhodamine probe, 1,3,5-benzenetrithiol and Hg2+ for fluorescence detection of Hg2+ was constructed. In this system, the probe underwent an addition reaction with the thiol group in 1,3,5-benzenetrithiol, destroying the conjugate structure of the probe and thus resulting in quenching of its red fluorescence. Hg2+ could remove 1,3,5-benzenetrithiol from the probe’s structure by coordinative binding to the compound, so the conjugate structure and red fluorescence of the probe were restored. The fluorescence intensity of the probe had a good linear relationship with the concentration of Hg2+ in the range of 5 × 10-9-1 × 10-8 and 1 × 10-8–1.1 × 10-7 mol/L, and the detection limit was 2 × 10-9 mol/L. Common heavy metal ions had no significant interference on the specific recognition of Hg2+. The recoveries of Hg2+ from spiked drinking water samples ranged from 86.7% to 110.2%. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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