Effect of boiling on the acidity of hydrothermal solutions
Effect of boiling on the acidity of hydrothermal solutions
复制标题
沸腾对热液酸度的影响
DOI:
10.1007/s00410-018-1535-5
复制
发表时间:
2019
影响因子:
3.5
通讯作者:
Staubwasser M.
中科院分区:
文献类型:
--
作者:
Ballhaus C;Gäb F;Garbe-Schönberg D;Staubwasser M.
Natural seawater and H2O–NaCl solutions were equilibrated along the two-phase (liquid–vapor) curves between 150 and 390 °C to re-examine the effect of liquid–vapor phase separation on element fractionations between saline brines and vapor phases. The experimental setup allows vapor and brine to be sampled separately at in situ P–T conditions. Experimental vapor pressure is constrained by temperature and the electrolyte concentration of the brines. With increasing temperature, dissolved electrolytes react with increasing temperature to hydroxides and HCl, in both seawater and H2O–NaCl solutions. The extent of hydrolysis is more pronounced in seawater than in H2O–NaCl solutions because seawater contains, in addition to NaCl, a range of other electrolytes capable of hydrolysis. Associated HCl has a great affinity to fractionate to the vapor phase when phase separation occurs. At 365 °C, halite-saturated vapor phases have a pH25(pH after condensation to 25 °C) of 1.8 (seawater) and 2.8 (H2O–NaCl brines). Our data suggest that boiling of hydrothermal solutions followed by mixing of vapor condensates with seawater can impose pH25values as acidic as the most acidic natural hydrothermal solutions vented on the ocean floor.
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影响因子:
5
作者:
W. Seyfried;M. Berndt;D. Janecky
通讯作者:
D. Janecky
影响因子:
1.7
作者:
A. Liebscher;V. Lüders;W. Heinrich;G. Schettler
通讯作者:
G. Schettler
影响因子:
5.8
作者:
Koschinsky, Andrea;Garbe-Schoenberg, Dieter;Strauss, Harald
通讯作者:
Strauss, Harald
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
M. Berndt;W. Seyfried
通讯作者:
W. Seyfried
影响因子:
5
作者:
J. Bischoff;R. Rosenbauer
通讯作者:
R. Rosenbauer