Density model for aqueous glycerol solutions Andreas
Density model for aqueous glycerol solutions Andreas
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DOI：
10.1007/s00348-018-2527-y
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发表时间：
2018-05-01
影响因子：
2.4
通讯作者：
Kaehler, Christian J.
中科院分区：
文献类型：
--
作者：
Volk, Andreas;Kaehler, Christian J.
甘油用于科学和日常生活的许多应用中，因为它便宜且生物非侵入性。在科学中，甘油的水溶液通常用于实验研究，因为它们的密度可以通过改变溶液中的甘油含量来调整。尽管世纪以来已经精确测量了甘油水溶液的密度，但目前的模型显示与测量数据的偏差高达2%。在这项工作中，我们提出了一个解析表达式，以准确地计算水甘油溶液的密度。所提出的经验模型在15至30摄氏度的范围内得到验证，相对于测量数据的最大偏差小于0.07%。这将当前模型的准确性提高了一个数量级以上。通过已知溶液的温度和甘油含量，可以简单地计算出其密度。补充材料中提供了Matlab函数，以便在其他科学工作中简单实现。
Glycerol is used in many applications of science and daily life as it is cheap and biologically non-invasive. In science, aqueous solutions of glycerol are commonly used for experimental investigations as their density can be adapted by changing the glycerol content in the solution. Although the density of aqueous glycerol solutions has been measured precisely since more than a century, current models show a deviation from measured data of up to 2%. In this work we present an analytical expression to accurately calculate the density of aqueous glycerol solutions. The presented empirical model is validated in the range between 15 and 30 degrees C and has a maximum deviation of less than 0.07% with respect to measured data. This improves the accuracy of current models by more than one order of magnitude. By knowing the temperature and glycerol content of the solution, its density can be simply calculated with the presented model. A Matlab function is provided in the supplementary material to allow a simple implementation in other scientific work.