Abstract
Total luminescence spectroscopy was applied to the fluorescence characterization of humic substances obtained from the International Humic Substances Society (IHSS). Results show that total luminescence spectra, represented as excitation−emission matrices (EEMs), may be used to discriminate between soil-derived and aquatic-derived IHSS humic substances and between humic and fulvic acids derived from the same source (soil or aquatic). Ionic strength in the range of 0−1 M KCl and humic substance concentration in the range of 5−100 mg/L had little effect on the fluorescence spectral characteristics of the humic substances, while pH had significant effects as expected. Absorbance correction was shown to be essential for accurate representation and comparison of the EEMs of the humic substances at high concentrations.
Keywords
ChemistryAbsorbanceLuminescenceIonic strengthHumic acidFluorescenceFluorescence spectroscopyEnvironmental chemistryAnalytical Chemistry (journal)ChromatographyAqueous solutionMaterials scienceOrganic chemistry
Affiliated Institutions
Related Publications
Patterns in phytoplankton taxonomic composition across temperate lakes of differing nutrient status
We describe the relationships between summer average total phosphorus (TP) and the biomass of six major phytoplankton taxonomic groups from 91 north temperate lakes. Both regres...
Free energy of ionic hydration: Analysis of a thermodynamic integration technique to evaluate free energy differences by molecular dynamics simulations
The thermodynamic integration technique to evaluate free energy differences by molecular dynamics simulations is analyzed. The hydration of the ions Na+ , K+ , Ca++ , F−, Cl−, a...
Recent Developments in the Application of Phosphorescent Iridium(III) Complex Systems
Abstract The recent developments in using iridium(III) complexes as phosphorescent emitters in electroluminescent devices, such as (white) organic light‐emitting diodes and ligh...
MANAGEMENT OF EUTROPHICATION FOR LAKES SUBJECT TO POTENTIALLY IRREVERSIBLE CHANGE
We analyzed management policies for ecosystems subject to alternate states, thresholds, and irreversible changes. We focused on the problem of lake eutrophication by excessive p...
Enhanced H<sub>2</sub> Adsorption in Isostructural Metal−Organic Frameworks with Open Metal Sites: Strong Dependence of the Binding Strength on Metal Ions
Metal-organic frameworks (MOFs) with open metal sites exhibit a much stronger H2 binding strength than classical MOFs, due to the direct interaction between H2 and the coordinat...
Publication Info
- Year
- 1996
- Type
- article
- Volume
- 30
- Issue
- 10
- Pages
- 3061-3065
- Citations
- 415
- Access
- Closed
External Links
Social Impact
Altmetric
PlumX Metrics
Social media, news, blog, policy document mentions
Citation Metrics
415
OpenAlex
Cite This
Jarafshan J. Mobed,
Sherry L. Hemmingsen,
Jennifer L. Autry
et al.
(1996).
Fluorescence Characterization of IHSS Humic Substances: Total Luminescence Spectra with Absorbance Correction.
Environmental Science & Technology
, 30
(10)
, 3061-3065.
https://doi.org/10.1021/es960132l
Identifiers
- DOI
- 10.1021/es960132l