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Hunter-Smith, R. J.; Balls, P. W.; Liss, P. S. (2011)
Publisher: Tellus B
Journal: Tellus B
Languages: English
Types: Article
Subjects:
The McAuliffe (1971) multiple equilibration technique has been used to measure the Henry’s Law constants (H) for a variety of low molecular weight halocarbon gases in distilled and sea waters at a number of temperatures. The following equations are best-fit lines from van’t Hoff plots of the results: Freon-1 1, In H = -2652/T + 10.50 (seawater) and In H = -2372/T + 9.25 (distilled water); Methyl Iodide, In H = -3541/T + 10.34 (distilled water); Chloroform, In H = -3649/T + 10.63 (seawater); Methyl Chloroform, In H = -3905/T + 13.04 (seawater) and In H = -2915/T + 9.15 (distilled water); Carbon Tetrachloride, In H = -323O/T + 11.27 (seawater) and In H = -2918/T + 9.77 (distilled water); where T is the temperature in degrees absolute. Halocarbon measurements made on an oceanographic cruise from 48°N to 65°S in the Atlantic in late 1981 indicate a small but statistically significant difference in atmospheric concentrations of Freon-I 1 between N and S hemispheres (198.8 and 184.7 pptv, respectively). In contrast, similar measurements for carbon tetrachloride show no significant inter-hemispheric gradient. Surface water concentrations of carbon tetrachloride are much higher at low southern latitudes compared to further north, concomitant with the lower water temperatures, and hence higher solubilities, between 30 and 60° S. However, using the Henry’s Law constants reported in this paper, the surface water over the whole section appears to be close to equilibrium with respect to the concentration of carbon tetrachloride in the overlying air, a situation identical to that currently found for Freon-1 1 in the N. Pacific (Gammon et al., 1982).DOI: 10.1111/j.1600-0889.1983.tb00021.x
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    • Cunnold, D., Alyea, F. and Prinn, R. 1978. A methodology for determining the atmospheric lifetime of fluorocarbons. J.Geophys. Res. 83,5493-5500.
    • Diprose, G. 1980. The chlorofluorocarbon/ozone issue: the industrial view. In Chlorofluorocarbons in the environment: the aerosol controversy (ed. T. M. Sugden and T. F. West), Chichester1U.K.: Ellis H O I W ~17,-24.
    • Gammon, R. H., Cline, J. and Wisegarver, D. 1982. Chlorofluoromethanes in the Northeast Pacific Ocean: measured vertical distributions and application as transient tracers of upper ocean mixing. J. Geophys. Res. 87,9441-9454.
    • Glew, D. N. and Moelwyn-Hughes, E. A. 1953. Chemical statics of the methyl halides in water. Dis. Faraday Soc. 15, 150-161.
    • Hammer, P. M., Hayes, J. M., Jenkins, W. J. and Gagosian, R. B. 1978. Exploratory analyses of trichlorofluoromethane (F-l1) in North Atlantic water columns. Geophys. Res. Lett. 5,645-648.
    • Horvath. A. L. 1982. Halogenated hydrocarbons: solubility-miscibility with water. New York1U.S.A.: Marcel Dekker, 889 pp.
    • Hyson, P., Fraser, P. J. and Pearman, G. I. 1980. A two-dimensional transport simulation model for trace atmospheric constituents. J. Geophys. Res. 85,4443- 4455.
    • Liss, P. S. 1973. Processes of gas exchange across an air-water interface. Deep-sea Res. 20,221-238.
    • Liss, P. S. and Slater, P. G. 1974. Flux of gases across the air-sea interface. Nature 247, 181- 184.
    • Lovelock, J. E., Maggs, R. J. and Wade, R. J. 1973. Halogenated hydrocarbons in and over the Atlantic. Nature 241, 194-196.
    • McAuliffe, C. D. 1971.GC determination of solutes by multiple phase equilibration. Chem. Tech. I, 46-5 1.
    • Park, T.,Rettich, T. R., Battino, R., Peterson, D. and Emmerich, W. 1982.Solubility of gases in liquids. 14. Bunsen coefficients for several fluorine-containing gases (Freons) dissolved in water at 298.15K. J. Chem. Eng. Data 27,324-326.
    • Singh, H. B., Salas, L. J., Shigeishi, H. and Scribner, E. 1979. Atmospheric halocarbons, hydrocarbons, and sulfur hexafluoride: global distributions, sources and sinks. Science 203,899-903.
    • Weast, R. C. 1972.Handbook of chemistry andphysics. Cleveland/U.S.A.: The Chemical Rubber Co.
    • Zeininger, H. 1975. Loslichkeit von Frigen 12 und Frigen I 1 in meerwasser. Internal Report Hoechst A.G., NO. 5957-111.1.
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