Partial molal volumes of some major ions in seawater1
Partial molal volumes of some major ions in seawater1
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海水中一些主要离子的偏摩尔体积1
DOI：
10.4319/lo.1976.21.6.0853
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发表时间：
1976
影响因子：
4.5
通讯作者：
J. Chanu
中科院分区：
文献类型：
--
作者：
A. Poisson;J. Chanu
本文用密度法测定了NaCl、KCl、CaCl_2、MgCl_2、Na_2SO_4和MgSO_4在海水中的偏摩尔体积V ~*（i），并推导了这些盐的热膨胀系数V ~*（i）。本文提出了在世界海洋温度和盐度范围内，盐的偏摩尔体积的半经验关系式。这些离子的偏摩尔体积是在假设质子无限稀释时的偏摩尔体积V* °（H*）是精确的，并且Cl−从纯水到海水的转移体积不随温度变化的前提下估算的。给出了离子偏摩尔体积与温度和盐度的关系式。
A densimetric method is used for determining the partial molal volumes, V*(i), of NaCl, KCl, CaCl2, MgCl2, Na2SO4, and MgSO4 in seawater and thermal expansibilities of V*(i) of these salts are deduced. A semiempirical relation is proposed for the partial molal volumes of salts, in the range of temperatures and salinities of the world ocean. The partial molal volumes of these ions are estimated on the assumption that the partial molal volume at infinite dilution of proton, V* °(H*), is exact and that the volume of transfer of Cl− from pure water to seawater does not vary with temperature. A convenient equation of partial molal volume of ions as a function of temperature and salinity is given.