Comparative study on humic substances isolated in thermal groundwaters from deep aquifers below 700 m

K. Kovács, A. Gáspár, C. S. Sajgó, P. Schmitt-Kopplin, E. Tombácz

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Main objectives of this study were to investigate whether humic substances (HS) exist in hot groundwater from deep basinal aquifers waters and to provide basic knowledge on humic (HA) and fulvic acids (FA) isolated from these fluids. Water sampling and HS isolation was carried out in three consecutive years from wells tapping the aquifers of the Pannonian Basin (Southeast Hungary). The isolated humic acid and fulvic acid samples were studied by elemental analysis, Fourier transform infrared (FTIR) spectroscopy, and Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (ESI-FT-ICR/MS). We found that modified sampling (acidification of water samples either immediately or after cooling down) had no traceable effect on the properties of isolated HAs and FAs. The quantity and quality of humic materials did not change in three years. The analytical results clarified distinctive chemical characters of HS in the deep aquifer groundwater compared to the Suwannee river fulvic acid (SRFA) as a reference. In addition, we stated that aliphatic content of isolated HAs and FAs increased with increasing aquifer depth and temperature, but the aromaticity and heteroatom content decreased in both fractions.

Original languageEnglish
Pages (from-to)211-224
Number of pages14
JournalGeochemical Journal
Volume46
Issue number3
DOIs
Publication statusPublished - 2012

Fingerprint

Humic Substances
aquifers
ground water
humic substance
Aquifers
Groundwater
comparative study
fulvic acid
aquifer
acids
groundwater
humic acid
Water
water sampling
Sampling
Hungary
Cyclotron resonance
Electrospray ionization
Acidification
Fourier analysis

Keywords

  • Aquatic humic substances
  • Deep aquifer
  • Geothermal energy
  • Pannonian Basin
  • Thermal water

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Comparative study on humic substances isolated in thermal groundwaters from deep aquifers below 700 m. / Kovács, K.; Gáspár, A.; Sajgó, C. S.; Schmitt-Kopplin, P.; Tombácz, E.

In: Geochemical Journal, Vol. 46, No. 3, 2012, p. 211-224.

Research output: Contribution to journalArticle

Kovács, K. ; Gáspár, A. ; Sajgó, C. S. ; Schmitt-Kopplin, P. ; Tombácz, E. / Comparative study on humic substances isolated in thermal groundwaters from deep aquifers below 700 m. In: Geochemical Journal. 2012 ; Vol. 46, No. 3. pp. 211-224.
@article{d54479aa427b4b42a911f9b9bfbccce9,
title = "Comparative study on humic substances isolated in thermal groundwaters from deep aquifers below 700 m",
abstract = "Main objectives of this study were to investigate whether humic substances (HS) exist in hot groundwater from deep basinal aquifers waters and to provide basic knowledge on humic (HA) and fulvic acids (FA) isolated from these fluids. Water sampling and HS isolation was carried out in three consecutive years from wells tapping the aquifers of the Pannonian Basin (Southeast Hungary). The isolated humic acid and fulvic acid samples were studied by elemental analysis, Fourier transform infrared (FTIR) spectroscopy, and Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (ESI-FT-ICR/MS). We found that modified sampling (acidification of water samples either immediately or after cooling down) had no traceable effect on the properties of isolated HAs and FAs. The quantity and quality of humic materials did not change in three years. The analytical results clarified distinctive chemical characters of HS in the deep aquifer groundwater compared to the Suwannee river fulvic acid (SRFA) as a reference. In addition, we stated that aliphatic content of isolated HAs and FAs increased with increasing aquifer depth and temperature, but the aromaticity and heteroatom content decreased in both fractions.",
keywords = "Aquatic humic substances, Deep aquifer, Geothermal energy, Pannonian Basin, Thermal water",
author = "K. Kov{\'a}cs and A. G{\'a}sp{\'a}r and Sajg{\'o}, {C. S.} and P. Schmitt-Kopplin and E. Tomb{\'a}cz",
year = "2012",
doi = "10.2343/geochemj.1.0168",
language = "English",
volume = "46",
pages = "211--224",
journal = "Geochemical Journal",
issn = "0016-7002",
publisher = "The Physiological Society of Japan",
number = "3",

}

TY - JOUR

T1 - Comparative study on humic substances isolated in thermal groundwaters from deep aquifers below 700 m

AU - Kovács, K.

AU - Gáspár, A.

AU - Sajgó, C. S.

AU - Schmitt-Kopplin, P.

AU - Tombácz, E.

PY - 2012

Y1 - 2012

N2 - Main objectives of this study were to investigate whether humic substances (HS) exist in hot groundwater from deep basinal aquifers waters and to provide basic knowledge on humic (HA) and fulvic acids (FA) isolated from these fluids. Water sampling and HS isolation was carried out in three consecutive years from wells tapping the aquifers of the Pannonian Basin (Southeast Hungary). The isolated humic acid and fulvic acid samples were studied by elemental analysis, Fourier transform infrared (FTIR) spectroscopy, and Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (ESI-FT-ICR/MS). We found that modified sampling (acidification of water samples either immediately or after cooling down) had no traceable effect on the properties of isolated HAs and FAs. The quantity and quality of humic materials did not change in three years. The analytical results clarified distinctive chemical characters of HS in the deep aquifer groundwater compared to the Suwannee river fulvic acid (SRFA) as a reference. In addition, we stated that aliphatic content of isolated HAs and FAs increased with increasing aquifer depth and temperature, but the aromaticity and heteroatom content decreased in both fractions.

AB - Main objectives of this study were to investigate whether humic substances (HS) exist in hot groundwater from deep basinal aquifers waters and to provide basic knowledge on humic (HA) and fulvic acids (FA) isolated from these fluids. Water sampling and HS isolation was carried out in three consecutive years from wells tapping the aquifers of the Pannonian Basin (Southeast Hungary). The isolated humic acid and fulvic acid samples were studied by elemental analysis, Fourier transform infrared (FTIR) spectroscopy, and Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (ESI-FT-ICR/MS). We found that modified sampling (acidification of water samples either immediately or after cooling down) had no traceable effect on the properties of isolated HAs and FAs. The quantity and quality of humic materials did not change in three years. The analytical results clarified distinctive chemical characters of HS in the deep aquifer groundwater compared to the Suwannee river fulvic acid (SRFA) as a reference. In addition, we stated that aliphatic content of isolated HAs and FAs increased with increasing aquifer depth and temperature, but the aromaticity and heteroatom content decreased in both fractions.

KW - Aquatic humic substances

KW - Deep aquifer

KW - Geothermal energy

KW - Pannonian Basin

KW - Thermal water

UR - http://www.scopus.com/inward/record.url?scp=84870636636&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84870636636&partnerID=8YFLogxK

U2 - 10.2343/geochemj.1.0168

DO - 10.2343/geochemj.1.0168

M3 - Article

VL - 46

SP - 211

EP - 224

JO - Geochemical Journal

JF - Geochemical Journal

SN - 0016-7002

IS - 3

ER -