Thermodynamic Properties of Aqueous Lithium Chloride Solutions. An Evaluation of the Gas Current Method for the Determination of the Thermodynamic Proper-ties of Aqueous Salt Solutions.

1951 ◽  
Vol 55 (2) ◽  
pp. 257-281 ◽  
Author(s):  
Ernest F. Johnson ◽  
Melvin C. Molstad
1944 ◽  
Vol 36 (10) ◽  
pp. 945-953 ◽  
Author(s):  
James B. Hunter ◽  
Harding. Bliss

2017 ◽  
Vol 17 (12) ◽  
pp. 7495-7507
Author(s):  
Shuzo Kutsuna

Abstract. Gas-to-water equilibrium coefficients, KeqS (in M atm−1), of difluoromethane (CH2F2), a hydrofluorocarbon refrigerant (HFC-32), in aqueous salt solutions relevant to seawater were determined over a temperature (T) range from 276 to 313 K and a salinity (S) range up to 51 ‰ by means of an inert-gas stripping method. From the van't Hoff equation, the KeqS value in water, which corresponds to the Henry's law constant (KH), at 298 K was determined to be 0.065 M atm−1. The salinity dependence of KeqS (the salting-out effect), ln(KH∕KeqS), did not obey the Sechenov equation but was proportional to S0. 5. Overall, the KeqS(T) value was expressed by ln(KeqS(T))  =  −49.71 + (77.70 − 0.134  ×  S0. 5)  ×  (100∕T) + 19.14  ×  ln(T∕100). By using this equation in a lower-tropospheric semi-hemisphere (30–90 °S) of the Advanced Global Atmospheric Gases Experiment (AGAGE) 12-box model, we estimated that 1 to 4 % of the atmospheric burden of CH2F2 resided in the ocean mixed layer and that this percentage was at least 4 % in the winter; dissolution of CH2F2 in the ocean may partially influence estimates of CH2F2 emissions from long-term observational data of atmospheric CH2F2 concentrations.


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