Surface Tension of Seawater

Journal of Physical and Chemical Reference Data - Tập 43 Số 4 - 2014
Kishor G. Nayar1, Divya Panchanathan1, Gareth H. McKinley1, John H. Lienhard1
1Massachusetts Institute of Technology Department of Mechanical Engineering, , Cambridge, Massachusetts 02139-4307, USA

Tóm tắt

New measurements and a reference correlation for the surface tension of seawater at atmospheric pressure are presented in this paper. Surface tension of seawater was measured across a salinity range of 20 ⩽ S ⩽ 131 g/kg and a temperature range of 1 ⩽ t ⩽ 92 °C at atmospheric pressure using the Wilhelmy plate method. The uncertainty within measurements varied from 0.18 to 0.37 mN/m with the average uncertainty being 0.22 mN/m. The experimental procedures were validated with tests conducted on ACS reagent grade water and aqueous sodium chloride solutions. Literature data and present measurements were evaluated and a reference correlation was developed expressing surface tension of seawater as a function of temperature and salinity. The average absolute percentage deviation between measurements and the correlation was 0.19% while the maximum deviation was 0.60%.

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Journal of Physical and Chemical Reference Data

Tập 43 Số 4

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