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Application of fluorescence spectroscopy using a novel fluoroionophore for quantification of zinc in urban runoff
| 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 | | Zinc | | Fluoroionophore | | 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) |
| URI: | http://hdl.handle.net/2115/54961 |
| 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)
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Submitter: 佐藤 久
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