Estimation of Redox Reactions of Deep Groundwaters in Japan
groundwaters, hot spring waters, redox reactions, in-situ pH, in-situ ORP
Abstract
pH and oxidation reduction potential (ORP) values of waters in original positions (insitu) were estimated using analytical data on deep groundwaters and hot spring waters at 67 points in Japan. A predominant redox reaction at each point was thermodynamically analysed on the basis of the Gibbs reaction energy. The results showed that a redox reaction of iron sulphide / sulphate ion was estimated to be predominant at many points, and that in a pH-ORP diagram, most of the in-situ pH and ORP estimates were on an equilibrium curve between pyrite and sulphate ion. It is suggested that the in-situ groundwaters in the Tertiary sedimentary rocks in Japan could be governed with the redox reaction of the iron sulphide / sulphate ion.
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References
C Appelo, Dieke Postma (2005) Geochemistry, Groundwater and Pollution.
K Asamori, K Umeda, T Ishimaru, R Komatsu (2003) Information of geological features of the Japanese Islands. 7450, 2002-2003.
R Furue, T Iwatsuki, K Hama (2005) An Appropriate Manner of Hydrochemical Investigation of Groundwater Using Deep Borehole. 46(4), 232-236.
M Gascoyne (1997) Evolution of Redox Conditions and Groundwater Composition in Recharge-Discharge Environments on the Canadian Shield. 5(3), 4-18.
M Gascoyne (2004) Hydrogeochemistry, groundwater ages and sources of salts in a granitic batholiths on the Canadian Shield, southeastern Manitoba. 19, 519-560.
(2008) Geotechnical & geoenvironmental software directory.
I Grenthe, W Stumm, M Laaksharju, A Nilsson, P Wikberg (1992) Redox potentials and redox reactions in deep groundwater systems. 98(1-2), 131-150.
J Hem (1970) Study and interpretation of the chemical characteristics of natural water.
Toshiyuki Hokari, Teruki Iwatsuki, Takanori Kunimaru (2008) Estimation of In-Situ Groundwater Conditions Based on Geochemical Equilibrium Simulations. 2(1), 15-29.
T Hokari, T Iwatsuki, T Kunimaru (2014) Estimation of in-situ groundwater conditions based on geochemical equilibrium simulations. 2(1), 15-29.
H Ii, Y Horie, T Ishii, J Shimada (1997) Development of an apparatus to measure groundwater qualities in situ and to sample groundwater using boreholes. 32(1), 17-22.
T Iwatsuki, K Morikawa, S Hosoya, H Yoshikawa (2009) A notice for measuring physicochemical parameters (pH, ORP) of deep groundwater. 51(3), 205-214.
T Kunimaru, K Shibano, H Kurigami, G Tomura, M Hara, H Yamamoto (2007) Analysis of ground water from boreholes, river water and precipitation in the Underground Research Laboratory Project.
D Langmuir (1997) Aqueous environmental geochemistry.
Osamu Matsubaya, Hitoshi Sakai, Isao Kusachi, Hiroshi Satake (1973) Hydrogen and oxygen isotopic ratios and major element chemistry of Japanese thermal water systems. 7(3), 123-151.
Frank Millero (1982) The effect of pressure on the solubility of minerals in water and seawater. 46(1), 11-22.
(2004) Development of Repository Concepts for Volunteer Siting Environment.
D Parkhurst, C Appelo (1999) User's guide to PHREEQC (Version 2) -A computer program for speciation, batch-reaction, one-dimensional transport, and inverse geochemical calculation.
Y Seki, T Nakajima, H Kanioka, Y Kanai, M Manaka, K Tsukimura (2004) Discharged water from deep wells in the eastern Kanto region -the relationship between water quality and underground geology. 54(1), 1-24.
W Stumm, J Morgan (1996) Aquatic chemistry: chemical equilibria and rates in natural watersthird.
J Tanger, H Helgeson (1988) Calculation of the thermodynamic and transport properties of aqueous species at high pressures and temperatures; revised equations of state for the standard partial molal properties of ions and electrolytes. 288(1), 19-98.
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2014-07-23
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