Adsorbed and bound residues in fulvic acid fractions of a contaminated groundwater - Isolation, chromatographic and spectroscopic characterization

被引：0

作者：

Zwiener, C ^{[1
]}

Kumke, MU ^{[1
]}

Abbt-Braun, G ^{[1
]}

Frimmel, FH ^{[1
]}

机构：

[1] Univ Karlsruhe, Engler Bunte Inst, Bereich Wasserchem, D-76131 Karlsruhe, Germany

来源：

ACTA HYDROCHIMICA ET HYDROBIOLOGICA | 1999年 / 27卷 / 04期

关键词：

humic substances; fulvic acids; bound residues; gas facility; XAD adsorption; size-exclusion chromatography; hydrophobic interaction chromatography;

D O I：

10.1002/(SICI)1521-401X(199907)27:4<208::AID-AHEH208>3.0.CO;2-V

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Humic substances (HS) were isolated from two contaminated groundwater samples (B22 and B53) from a site of a former gas facility. The isolation yielded almost only the fulvic acid fractions (FA). For characterization spectroscopic (UV, fluorescence) and chromatographic techniques (hydrophobic interaction chromatography - HIC as well as size-exclusion chromatography - SEC) were applied. The sample designated B22 FA was collected from the contamination plume whereas the sample B53 FA was collected downstream. Distinct differences were exhibited by these samples. The UV and fluorescence spectra as well as the HIC and SEC chromatograms of the B53 FA sample resemble those of the FA fraction obtained from natural water (groundwater, bog). The HIC and SEC chromatograms reveal the presence of organic compounds in B22 FA which can be derived from coal tar contaminants or their metabolites. Some of the compounds can be extracted from the FA fraction with non-polar organic solvents indicating adsorptive forces between the contaminants and the FA fraction.

引用

页码：208 / 213

页数：6