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The fluorescence of a mercury probe based on osthol.

ABSTRACT: The ability of osthol (OST) to recognize mercury ions in aqueous solution was studied using fluorescence, UV-vis spectrophotometry, mass spectrometry, and ¹H NMR spectroscopy, and the recognition mechanism is discussed. The results showed that OST and Hg²⁺ can form a complex with a stoichiometric ratio of 1:1. The binding constant was 1.552 × 10⁵ L?mol^-1, having a highly efficient and specific selectivity for Hg²⁺. The fluorescence intensity of OST showed a good linear correlation with the Hg²⁺ concentration (6.0 × 10^-5 to 24.0 × 10^-5 mol?L^-1, R ² = 0.9954), and the detection limit of the probe was 5.04 × 10^-8 mol?L^-1, which can be used for the determination of Hg²⁺ traces.

SUBMITTER: Luo G

PROVIDER: S-EPMC7801779 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature

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The fluorescence of a mercury probe based on osthol.

Luo Guangyan G Zeng Zhishu Z Zhang Lin L Tao Zhu Z Zhang Qianjun Q

Beilstein journal of organic chemistry 20210105

The ability of osthol (OST) to recognize mercury ions in aqueous solution was studied using fluorescence, UV-vis spectrophotometry, mass spectrometry, and 1H NMR spectroscopy, and the recognition mechanism is discussed. The results showed that OST and Hg2+ can form a complex with a stoichiometric ratio of 1:1. The binding constant was 1.552 × 105 L∙mol-1, having a highly efficient and specific selectivity for Hg2+. The fluorescence intensity ...[more]

PMID: 33488828

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