PVT properties of concentrated electrolytes. VI. The speed of sound and apparent molal compressibilities of NaCl, Na2SO4, MgCl2, and MgSO4 solutions from 0 to 100�C

Millero, Frank J.; Vinokurova, Faina; Fernandez, Marino; Hershey, J. Peter

doi:10.1007/bf00646119

Cited by 74 publications

(30 citation statements)

References 22 publications

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“…The sound speed of 0.725 m NaCl at 25°C had a value of U 2 ¼1540.83 m s À 1 which is in agreement (7 0.01 m s À 1 ) with the literature values (Millero, et al, 1987). The average precision of the sound speed measurements was 70.07 m s À 1 .…”

Section: Sound Speedssupporting

confidence: 73%

The partial molal volume and compressibility of Tris and Tris–HCl in water and 0.725 m NaCl as a function of temperature

Rodriguez

Huang

Millero

2015

Deep Sea Research Part I: Oceanographic Research Papers

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a b s t r a c t The apparent molal volumes and compressibilities of Tris and Tris-HCl have been determined in water (5-45°C) and 0.725 m NaCl (5-25°C). The changes in the volume (ΔV) and compressibility (Δκ) for the dissociation of Tris-H þ Tris H Tris H − = + + + as functions of temperature in water and 0.725 m NaCl have been determined from these measurements. The values of ΔV and Δκ have been used to determine the effect of pressure on the dissociation constant for Tris-H þ (K P /K 0 ). K K RT P RT P ln / V/ 0.5 k/ P 0 2( )=− ∆ ( ) + ∆ ( ) These results will be useful in the calibration of pH systems making in-situ measurements at high pressure in seawater. In 0.725 m NaCl at 5°C and a pressure of 2000 bar, the dissociation constant is reduced by 29%.

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Section: Sound Speedssupporting

confidence: 73%

The partial molal volume and compressibility of Tris and Tris–HCl in water and 0.725 m NaCl as a function of temperature

Rodriguez

Huang

Millero

2015

Deep Sea Research Part I: Oceanographic Research Papers

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“…Different dissolved salts affect the properties of the solution in different ways. However, these differences remain small for Raman37, refractive index38 and sound velocity39, which are the ingredients needed to apply the procedure we propose. Therefore, the equations for NaCl solutions will provide a good approximation for other solutes.…”

Section: Resultsmentioning

confidence: 97%

“…Whereas w is available in the range 0–100 °C and 0–6 mol kg −1 (Ref. 39), n is available in the range 0–6 mol kg −1 but only at 20 °C (Ref. 38).…”

Section: Methodsmentioning

confidence: 99%

Brillouin spectroscopy of fluid inclusions proposed as a paleothermometer for subsurface rocks

Mekki-Azouzi

Tripathi

Pallares

et al. 2015

Sci Rep

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As widespread, continuous instrumental Earth surface air temperature records are available only for the last hundred fifty years, indirect reconstructions of past temperatures are obtained by analyzing “proxies”. Fluid inclusions (FIs) present in virtually all rock minerals including exogenous rocks are routinely used to constrain formation temperature of crystals. The method relies on the presence of a vapour bubble in the FI. However, measurements are sometimes biased by surface tension effects. They are even impossible when the bubble is absent (monophasic FI) for kinetic or thermodynamic reasons. These limitations are common for surface or subsurface rocks. Here we use FIs in hydrothermal or geodic quartz crystals to demonstrate the potential of Brillouin spectroscopy in determining the formation temperature of monophasic FIs without the need for a bubble. Hence, this novel method offers a promising way to overcome the above limitations.

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“…We also measured the PVT properties of the major sea salts as functions of temperature and pressure (Chen et al 1977a. More recent density and sound speed studies have been made on the major sea salts over a wider range of concentrations (Connaughton et al 1986, Millero et al 1987c.…”

Section: Chemical Thermodynamicsmentioning

confidence: 99%

Reflections on My Career as a Marine Physical Chemist, and Tales of the Deep

Millero

2015

Annu. Rev. Mar. Sci.

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This is a personal review of how one can apply the principles of physical chemistry to study the ocean and other natural waters. Physical chemistry is the study of chemical thermodynamics, kinetics, and molecular structure. My long-term interest in the chemistry of seawater is an extension of my early work on water and the interactions that occur in aqueous electrolyte solutions, which I began as part of my PhD research on the thermodynamics of organic acids in water. Over the years, I have attempted to apply the tools of physical chemistry to elucidate the structures of seawater, brines, lakes, and rivers. I have developed and continue to work on ionic interaction models that can be applied to all natural waters. Here, I reflect on how my students, postdocs, research assistants, and scientific colleagues have influenced my life, my career, and the field of marine physical chemistry. My hope was and is to use these tools to understand the molecular structures of natural waters.

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PVT properties of concentrated electrolytes. VI. The speed of sound and apparent molal compressibilities of NaCl, Na2SO4, MgCl2, and MgSO4 solutions from 0 to 100�C

Cited by 74 publications

References 22 publications

The partial molal volume and compressibility of Tris and Tris–HCl in water and 0.725 m NaCl as a function of temperature

The partial molal volume and compressibility of Tris and Tris–HCl in water and 0.725 m NaCl as a function of temperature

Brillouin spectroscopy of fluid inclusions proposed as a paleothermometer for subsurface rocks

Reflections on My Career as a Marine Physical Chemist, and Tales of the Deep

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