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Application of fluorescence spectroscopy using a novel fluoroionophore for quantification of zinc in urban runoff

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Title: Application of fluorescence spectroscopy using a novel fluoroionophore for quantification of zinc in urban runoff
Authors: Hafuka, Akira Browse this author
Yoshikawa, Hiroaki Browse this author
Yamada, Koji Browse this author
Kato, Tsuyoshi Browse this author →KAKEN DB
Takahashi, Masahiro Browse this author
Okabe, Satoshi Browse this author →KAKEN DB
Satoh, Hisashi Browse this author →KAKEN DB
Keywords: Fluorescence spectroscopy
Urban runoff
Spearman's rank correlation analysis
Issue Date: 1-May-2014
Journal Title: Water Research
Volume: 54
Start Page: 12
End Page: 20
Publisher DOI: 10.1016/j.watres.2014.01.040
PMID: 24531076
Abstract: Fluorescence spectroscopy has great potential for on-site and real-time monitoring of pollutants in aquatic environments; however, its application to environmental aquatic samples has been extremely limited. In this study, a novel fluoroionophore based on a BODIPY-terpyridine conjugate was developed and applied to determine Zn concentrations in urban runoff. The fluoroionophore selectively bound to Zn2+ in water, which led to an instant red-shift of the fluorescence peak of the fluoroionophore from 539 nm to 567 nm that could be seen by the naked eye. Zn concentrations could be quantified using the ratio of fluorescence intensities, and the detection limit was 9 μg/L, which is sufficiently low for environmental aquatic samples. To demonstrate applicability of the method to environmental samples, we measured Zn concentrations in urban runoff samples with a complex matrix (~60 mg/L dissolved organic carbon and ~20 mS/cm electrical conductivity). The total and dissolved fractions of Zn in the samples could be determined by fluorescence spectroscopy and its relative error was estimated to be less than 30% by inductively coupled plasma-atomic emission spectroscopy analysis. The proposed method is rapid and easy-to-use with simple pretreatment for Zn determination in environmental aquatic samples with complex matrices
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 佐藤 久

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