| Autor: |
Zhenwei WANG, Xiliang CHEN, Xiaobing HU, Changyuan LU |
| Jazyk: |
čínština |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Shipin gongye ke-ji, Vol 43, Iss 22, Pp 303-309 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
1002-0306 |
| DOI: |
10.13386/j.issn1002-0306.2021120324 |
| Popis: |
In this work, using Eu3+ embedded tungsten-oxygen cluster (compound 1) as the fluorescent probe material, the rapid and sensitive fluorescence detection of heavy metal Cr3+ ions in aqueous solution by compound 1 has been systematically studied. The selectivity, anti-interference ability and detection limit of compound 1 for fluorescence detection of Cr3+ ions in water were characterized and analyzed by steady-state transient fluorescence spectrometer. The results showed that compound 1 exhibited a rapid and sensitive fluorescence quenching response to heavy metal Cr3+ ions with strong anti-interference ability. The calculated value of quenching constant (1.41×108 L·mol−1·s−1) was far lower than the maximum scattering collision quenching constant (2.00×1010 L·mol−1·s−1), which showed that compound 1 exhibited a rapid and sensitive fluorescence quenching response to heavy metal Cr3+ ions. Fluorescence detection results of compound 1 in the aqueous solution containing different cations and anions showed that compound 1 had strong anti-interference ability for fluorescence detection of Cr3+ ions in aqueous solution. The calculated results indicated that detection limit of compound 1 for Cr3+ ions in aqueous solution was 4.21×10−7 mol/L, which showed that compound 1 had a good detection effect on Cr3+ ions in water environment. This study was supposed to provide a sensitive and reliable method for the fluorescence detection of heavy metal Cr3+ ions in water. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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