Conformational Changes in a Soil Fulvic Acid Measured by Time-Dependent Fluorescence Depolarization

Charles H. Lochmüller; Steven S. Saavedra

doi:10.1021/ac00122a014

Conformational Changes in a Soil Fulvic Acid Measured by Time-Dependent Fluorescence Depolarization

Charles H. Lochmüller, Steven S. Saavedra

Chemistry and Biochemistry

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Abstract

The dependence of the aqueous conformation of a soil-derived fulvic acid on the independent parameters specifying the solution composition has been studied by time-dependent fluorescence depolarization spectroscopy. The molecular size and shape of the fluorescent components in fulvic acid were found to vary with solution pH, ionic strength, and sample concentration. These results indicate that this material behaves like a flexible polyelectrolyte in solutions approximating naturally occurring concentrations.

Original language	English (US)
Pages (from-to)	1978-1981
Number of pages	4
Journal	Analytical Chemistry
Volume	58
Issue number	9
DOIs	https://doi.org/10.1021/ac00122a014
State	Published - Aug 1986

ASJC Scopus subject areas

Analytical Chemistry

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title = "Conformational Changes in a Soil Fulvic Acid Measured by Time-Dependent Fluorescence Depolarization",

abstract = "The dependence of the aqueous conformation of a soil-derived fulvic acid on the independent parameters specifying the solution composition has been studied by time-dependent fluorescence depolarization spectroscopy. The molecular size and shape of the fluorescent components in fulvic acid were found to vary with solution pH, ionic strength, and sample concentration. These results indicate that this material behaves like a flexible polyelectrolyte in solutions approximating naturally occurring concentrations.",

author = "Lochm{\"u}ller, {Charles H.} and Saavedra, {Steven S.}",

year = "1986",

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N2 - The dependence of the aqueous conformation of a soil-derived fulvic acid on the independent parameters specifying the solution composition has been studied by time-dependent fluorescence depolarization spectroscopy. The molecular size and shape of the fluorescent components in fulvic acid were found to vary with solution pH, ionic strength, and sample concentration. These results indicate that this material behaves like a flexible polyelectrolyte in solutions approximating naturally occurring concentrations.

AB - The dependence of the aqueous conformation of a soil-derived fulvic acid on the independent parameters specifying the solution composition has been studied by time-dependent fluorescence depolarization spectroscopy. The molecular size and shape of the fluorescent components in fulvic acid were found to vary with solution pH, ionic strength, and sample concentration. These results indicate that this material behaves like a flexible polyelectrolyte in solutions approximating naturally occurring concentrations.

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U2 - 10.1021/ac00122a014

DO - 10.1021/ac00122a014

M3 - Article

AN - SCOPUS:0022766363

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JO - Analytical Chemistry

JF - Analytical Chemistry

IS - 9

ER -

Conformational Changes in a Soil Fulvic Acid Measured by Time-Dependent Fluorescence Depolarization

Abstract

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