A method for determining thermophysical properties of organic material in aqueous solutions: Succinic acid
A method for determining thermophysical properties of organic material in aqueous solutions: Succinic acid
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DOI：
10.1016/j.atmosres.2006.02.014
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发表时间：
2006-12-01
影响因子：
5.5
通讯作者：
Kulmala, M.
中科院分区：
文献类型：
--
作者：
Riipinen, I.;Svenningsson, B.;Kulmala, M.
介绍了一种测定水溶液液滴蒸发速率和热力学性质的方法。该方法将利用改进的TDMA技术测量蒸发速率与利用精确蒸发模型评估数据相结合。第一组数据已经收集和评估琥珀酸水溶液滴。在控制相对湿度（65%）和温度（298K）下，使用TDMA系统测量了琥珀酸溶液液滴的蒸发速率。用数值模型对纯液相琥珀酸的蒸发速率数据进行了分析，导出了常温下纯液相琥珀酸饱和蒸气压随温度变化的表达式。得到液相琥珀酸的饱和蒸气压ln(p)= 118.41 ~ 16204.8/T ~ 12.452ln(T)。蒸气压的单位是帕斯卡，温度的单位是开尔文。给出了液相琥珀酸蒸发焓的线性表达式。根据下面的结果，给出了温度高于461 K时液相琥珀酸蒸气压的文献表达式[Yaws， C.L, 2003]。雅司的化学化合物的热力学和物理性质手册，Knovel]可以外推到大气温度具有非常好的准确性。结果还表明，在298 K时，琥珀酸的质量调节系数为1或非常接近1。(c) 2006 Elsevier B.V.版权所有
A method for determining evaporation rates and thermodynamic properties of aqueous solution droplets is introduced. The method combines evaporation rate measurements using modified TDMA technique with data evaluation using an accurate evaporation model. The first set of data has been collected and evaluated for succinic acid aqueous solution droplets.Evaporation rates of succinic acid solution droplets have been measured using a TDMA system at controlled relative humidity (65%) and temperature (298K). A temperature-dependent expression for the saturation vapour pressure of pure liquid phase succinic acid at atmospheric temperatures has been derived by analysing the evaporation rate data with a numerical model. The obtained saturation vapour pressure of liquid phase succinic acid is ln(p)= 118.41 - 16204.8/T - 12.452ln(T). The vapour pressure is in unit of Pascal and the temperature in Kelvin. A linear expression for the enthalpy of vaporization for liquid state succinic acid is also presented.According to the results presented in the following, a literature expression for the vapour pressure of liquid phase succinic acid defined for temperatures higher than 461 K [Yaws, C.L., 2003. Yaws' Handbook of Thermodynamic and Physical Properties of Chemical Compounds, Knovel] can be extrapolated to atmospheric temperatures with very good accuracy. The results also suggest that at 298 K the mass accommodation coefficient of succinic acid is unity or very close to unity. (c) 2006 Elsevier B.V. All rights reserved.