Detection of PFOS and copper(II) ions based on complexation induced fluorescence quenching of porphyrin molecules

Yifeng Wang; Haiyan Zhu

doi:10.1039/C3AY41902A

Detection of PFOS and copper(II) ions based on complexation induced fluorescence quenching of porphyrin molecules

Yifeng Wang^a and Haiyan Zhu*^a

* Corresponding authors

^a Key Laboratory of Eco-enviroments in the Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, School of Life Science, Southwest University, Chongqing 400715, P.R. China
E-mail: zhylzd@swu.edu.cn

Abstract

Finding a highly sensitive and specific, but technically simple method for the detection of the anthropogenic pollutant, perfluorooctane sulfonate (PFOS), is a worthwhile yet challenging undertaking. In this article, it was found that both PFOS and copper(II) ions can form complexes with cationic porphyrin molecules, resulting in the fluorescence quenching of these molecules. However, when the quantitative analysis of PFOS was performed, the interference of copper(II) ions could be eliminated by additionally introducing 0.1 mM of EDTA into the sample, and similarly, the influence of PFOS on the quantitative analysis of the copper(II) ions could be eliminated using powder activated carbon to remove them from the samples. Therefore, a fluorescence quenching method for the detection of PFOS and copper(II) ions in the same sample was developed, using cationic porphyrin as the optical probe, which has the advantages of technical simplicity, high selectivity and sensitivity.

Supplementary files

Publication details

The article was received on 28 Oct 2013, accepted on 11 Jan 2014 and first published on 05 Mar 2014

Article type: Paper

DOI: 10.1039/C3AY41902A

Author version available: Download Author version (PDF)

Citation: Anal. Methods, 2014,6, 2379-2383

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Detection of PFOS and copper(II) ions based on complexation induced fluorescence quenching of porphyrin molecules

Y. Wang and H. Zhu, Anal. Methods, 2014, 6, 2379
DOI: 10.1039/C3AY41902A
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Analytical Methods

Detection of PFOS and copper(II) ions based on complexation induced fluorescence quenching of porphyrin molecules

Abstract

Supplementary files

Publication details

Detection of PFOS and copper(II) ions based on complexation induced fluorescence quenching of porphyrin molecules

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