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Steady-state and time-resolved fluorometry of fluorescent pollutants and heavy metal complexes

  • Time-resolved laser-induced fluorescence spectroscopy is one of the most sensitive optical methods which is well suited for on-line in situ analysis. Here, three examples for the steady- state and time-resolved fluorescence analysis of environmentally important analytes, the fluorescent monoaromatic hydrocarbons benzene, toluene, and xylene as well as non fluorescent heavy metal ions forming a fluorescent complex with a cation coordinating fluorescence probe, are presented and the potential of both methods is discussed. For BTX, various mixtures of the spectrally similar compounds B, T, and X showing different fluorescence lifetimes were studied with both methods. As an example for fluorometric metal ion analysis, the fluorescence probe BP(OH)2 (2,2'-bipyridyl- 3,3'-diol) was employed for the determination of d10 metal ions in water and the newly developed fluorescence probe APTA for the detection of Cu(II). Cation complexation of BP(OH2 yields spectrally very similar complexes whichTime-resolved laser-induced fluorescence spectroscopy is one of the most sensitive optical methods which is well suited for on-line in situ analysis. Here, three examples for the steady- state and time-resolved fluorescence analysis of environmentally important analytes, the fluorescent monoaromatic hydrocarbons benzene, toluene, and xylene as well as non fluorescent heavy metal ions forming a fluorescent complex with a cation coordinating fluorescence probe, are presented and the potential of both methods is discussed. For BTX, various mixtures of the spectrally similar compounds B, T, and X showing different fluorescence lifetimes were studied with both methods. As an example for fluorometric metal ion analysis, the fluorescence probe BP(OH)2 (2,2'-bipyridyl- 3,3'-diol) was employed for the determination of d10 metal ions in water and the newly developed fluorescence probe APTA for the detection of Cu(II). Cation complexation of BP(OH2 yields spectrally very similar complexes which differ in their fluorescence lifetimes. Complexation of APTA to Cu(II) leads to small spectral changes and a strong increase in fluorescence quantum yield and lifetime. For the analytes studied, a comparison of the detection limits, standard deviations, and linear dynamic range of both methods clearly demonstrates the analytical potential of time-resolved fluorometry.zeige mehrzeige weniger

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Metadaten
Autor*innen:Ute Resch-GengerORCiD, Knut RurackORCiD
Persönliche Herausgeber*innen:R. Lieberman
Dokumenttyp:Beitrag zu einem Sammelband
Veröffentlichungsform:Verlagsliteratur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Chemical, biochemical, and environmental fiber sensors IX
Jahr der Erstveröffentlichung:1997
Herausgeber (Institution):Deutsche Forschungsanstalt für Luft- und Raumfahrt, Köln
Verlag:SPIE
Verlagsort:Bellingham, Wash.
Ausgabe/Heft:3105
Erste Seite:96
Letzte Seite:103
Freie Schlagwörter:Cation complex; Fluorescence; Heavy metal ion; Probe; Time-resolved
Veranstaltung:Conference
Veranstaltungsort:Munich, Germany
Beginndatum der Veranstaltung:1997-06-16
Enddatum der Veranstaltung:1997-06-18
DOI:10.1117/12.276139
ISSN:1605-7422
ISBN:0-8194-2526-5
Bemerkung:
Serientitel: SPIE proceedings series – Series title: SPIE proceedings series
Verfügbarkeit des Dokuments:Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
Bibliotheksstandort:Sonderstandort: Publica-Schrank
Datum der Freischaltung:19.02.2016
Referierte Publikation:Nein
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