Fluorescence of humic acids (HA) and pyrene-HA complexes at ultralow temperature

M.U. Kumke; F.H. Frimmel; F. Ariese; C. Gooijer

doi:10.1021/es9910457

Fluorescence of humic acids (HA) and pyrene-HA complexes at ultralow temperature

M.U. Kumke, F.H. Frimmel, F. Ariese, C. Gooijer

BioAnalytical Chemistry

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

The interaction of pyrene with humic acids of different origins was investigated using fluorescence line narrowing (FLN) spectroscopy at 10 K. FLN spectroscopy can be used to obtain vibrationally resolved fluorescence spectra from samples that under ordinary conditions suffer from extensive spectral broadening. Due to the presence of humic acid the site distribution and the relative intensities of the ground-state vibrations in the fluorescence spectrum (Ham-effect) of pyrene were changed. Both effects were related to the altered microenvironment of pyrene in the presence of humic acid. On the other hand, for humic acids no fluorescence line narrowing effect was observed indicating the occurrence of intra- and intermolecular processes.

Original language	English
Pages (from-to)	3818-3823
Number of pages	6
Journal	Environmental Science and Technology
Volume	34
Issue number	17
DOIs	https://doi.org/10.1021/es9910457
Publication status	Published - 2000

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title = "Fluorescence of humic acids (HA) and pyrene-HA complexes at ultralow temperature",

abstract = "The interaction of pyrene with humic acids of different origins was investigated using fluorescence line narrowing (FLN) spectroscopy at 10 K. FLN spectroscopy can be used to obtain vibrationally resolved fluorescence spectra from samples that under ordinary conditions suffer from extensive spectral broadening. Due to the presence of humic acid the site distribution and the relative intensities of the ground-state vibrations in the fluorescence spectrum (Ham-effect) of pyrene were changed. Both effects were related to the altered microenvironment of pyrene in the presence of humic acid. On the other hand, for humic acids no fluorescence line narrowing effect was observed indicating the occurrence of intra- and intermolecular processes.",

author = "M.U. Kumke and F.H. Frimmel and F. Ariese and C. Gooijer",

year = "2000",

doi = "10.1021/es9910457",

language = "English",

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journal = "Environmental Science and Technology",

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T1 - Fluorescence of humic acids (HA) and pyrene-HA complexes at ultralow temperature

AU - Kumke, M.U.

AU - Frimmel, F.H.

AU - Ariese, F.

AU - Gooijer, C.

PY - 2000

Y1 - 2000

N2 - The interaction of pyrene with humic acids of different origins was investigated using fluorescence line narrowing (FLN) spectroscopy at 10 K. FLN spectroscopy can be used to obtain vibrationally resolved fluorescence spectra from samples that under ordinary conditions suffer from extensive spectral broadening. Due to the presence of humic acid the site distribution and the relative intensities of the ground-state vibrations in the fluorescence spectrum (Ham-effect) of pyrene were changed. Both effects were related to the altered microenvironment of pyrene in the presence of humic acid. On the other hand, for humic acids no fluorescence line narrowing effect was observed indicating the occurrence of intra- and intermolecular processes.

AB - The interaction of pyrene with humic acids of different origins was investigated using fluorescence line narrowing (FLN) spectroscopy at 10 K. FLN spectroscopy can be used to obtain vibrationally resolved fluorescence spectra from samples that under ordinary conditions suffer from extensive spectral broadening. Due to the presence of humic acid the site distribution and the relative intensities of the ground-state vibrations in the fluorescence spectrum (Ham-effect) of pyrene were changed. Both effects were related to the altered microenvironment of pyrene in the presence of humic acid. On the other hand, for humic acids no fluorescence line narrowing effect was observed indicating the occurrence of intra- and intermolecular processes.

U2 - 10.1021/es9910457

DO - 10.1021/es9910457

M3 - Article

SN - 0013-936X

VL - 34

SP - 3818

EP - 3823

JO - Environmental Science and Technology

JF - Environmental Science and Technology

IS - 17

ER -

Fluorescence of humic acids (HA) and pyrene-HA complexes at ultralow temperature

Abstract

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