TY - JOUR
T1 - Boron Isotope Fractionation between Liquid and Gas at Saturated Water Vapor Line
AU - Bychkov, A. Yu
AU - Nikolaeva, I. Yu
AU - Bychkova, Y. V.
AU - Sakaguchi, Ch
AU - Nakamura, E.
N1 - Funding Information:
Experimental studies and thermodynamic calculations were carried out with the support of the Russian Science Foundation 19-17-00200, field work supported by the RFBR, project 17-05-00257, isotopic studies supported by the Joint Use/Research Center for “Earth and Planetary Materials Sciences” (IPM).
Publisher Copyright:
© 2020, Pleiades Publishing, Ltd.
PY - 2020/11/1
Y1 - 2020/11/1
N2 - Abstract: The first experimental data were obtained on the distribution of boron isotopes between gas and liquid at 100–350°С and the pressure of saturated water vapor, and the effect of pH on this distribution at 100°С was studied. The results showed that the value of δ11Bgas–δ11Bliquid was 5.9, 3.7, 1.1, 0.8, and –1.3 ‰ at 100, 200, 250, 300, and 350°С. In an alkaline solution, the boron distribution coefficient between gas and liquid decreases, and the isotopic shift increases; at 100°C and pH 9.1 it is 17.0. The isotopic composition of the boron of thermal waters of the Mutnovsky geothermal system (Kamchatka Peninsula, Russia) was investigated. In thermal springs, a large spread of δ11B values from 2.8 to 18‰ was determined. A wide range of isotopic compositions can be explained by the fractionation of boron between gas and liquid.
AB - Abstract: The first experimental data were obtained on the distribution of boron isotopes between gas and liquid at 100–350°С and the pressure of saturated water vapor, and the effect of pH on this distribution at 100°С was studied. The results showed that the value of δ11Bgas–δ11Bliquid was 5.9, 3.7, 1.1, 0.8, and –1.3 ‰ at 100, 200, 250, 300, and 350°С. In an alkaline solution, the boron distribution coefficient between gas and liquid decreases, and the isotopic shift increases; at 100°C and pH 9.1 it is 17.0. The isotopic composition of the boron of thermal waters of the Mutnovsky geothermal system (Kamchatka Peninsula, Russia) was investigated. In thermal springs, a large spread of δ11B values from 2.8 to 18‰ was determined. A wide range of isotopic compositions can be explained by the fractionation of boron between gas and liquid.
KW - boron isotopes
KW - gas-liquid distribution
KW - geothermal systems
UR - http://www.scopus.com/inward/record.url?scp=85094924776&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85094924776&partnerID=8YFLogxK
U2 - 10.1134/S001670292011004X
DO - 10.1134/S001670292011004X
M3 - Article
AN - SCOPUS:85094924776
SN - 0016-7029
VL - 58
SP - 1257
EP - 1261
JO - Geochemistry International
JF - Geochemistry International
IS - 11
ER -