Work

Highly sensitive detection of mercury ions in aqueous solutions by laser-induced fluorescence spectroscopy

Year: 2024

Type: article

Abstract: Laser-induced fluorescence spectroscopy was used to detect mercury ions in aqueous solutions, in which CH-95 resin was used to chelate the ions to transform the liquid samples into solid ones. The experimental results showed that the fluorescence emission of the chelated solid-state samples excited by a low-power semiconductor laser at the wavelength of 447 nm was significantly enhanced due to the chelating reaction. The fluorescence intensity was proportional to the concentration of mercury ions with a linear correlation coefficient of R 2 = 0.994, and the limit of detection was 0.117 ng/L, which was about 10,000 times lower than the permissible level of 1 µg/L for Hg(II) in drinking water. The method greatly improved the sensitivity for the detection of Hg in aqueous solutions.

Source: Optics Express

DOI: 10.1364/oe.543341

Authors: Dongqing Qiao, Jinan Xia, Lanxin Shi, Junjie Pan, Huimiao Cheng, Zixuan Wang

Language: English

Topic: Analytical chemistry methods development

Subfield: Analytical Chemistry

Field: Chemistry

Domain: Physical Sciences

SDG: Clean water and sanitation

Open Access status: gold

Estimated APC paid: $2,270

Funder: Shanghai University of Engineering and Science