非离子表面活性剂对二元和三元水溶液的水活性的影响
Emily K Werner1, Owen Wasserlein1, Cassidy Mahan1
1Department of Chemistry, Oregon State University, Corvallis, Oregon, USA. alison.bain@oregonstate.edu.
Physical chemistry chemical physics : PCCP
|February 12, 2026
概括
气溶无机有机混合物功能组活性系数 (AIOMFAC) 模型在使用适当的表面活性剂分子子组描述时,准确地预测气溶溶液中的水活性. 这种验证对于改进云点滴激活模型至关重要.
科学领域:
- 大气化学 大气化学
- 物理化学 物理化学
背景情况:
- 大气中的气溶液滴表现出显著的表面面积与体积的比率,影响散装与表面的分区.
- 这种分隔会影响气溶的表面张力和水的活动,特别是在强大的表面活性剂中.
- AIOMFAC模型通过组贡献方法估计混合无机有机溶液中的水活性.
研究的目的:
- 为了验证AIOMFAC模型对含有强,非离子表面活性剂的溶液中的水活动的预测.
- 评估不同分子子组描述对模型准确性的影响.
- 为了提高云点滴激活模型的预测能力.
主要方法:
- 在含有非离子表面活性剂和NaCl混合物的溶液中实验测量水活动.
- 实验数据与AIOMFAC模型预测的比较.
- 对聚乙烯糖醇 (PEG) 类分子的不同亚组方法 (氧乙烯与以太/) 的评估.
主要成果:
- 将AIOMFAC的预测与非离子表面活性剂溶液的实验水活性测量进行了比较.
- 使用氧乙烯子组为PEG类分子提供了比以太和基子组更高的精度.
- 模型测量协议强调了水活动预测对子组选择的敏感性.
结论:
- 精确选择分子子组描述对于可靠的AIOMFAC水活动预测至关重要.
- 经过验证的AIOMFAC预测可以增强对云点滴激活过程的理解和建模.
- 这项研究弥合了大气气溶系统的理论建模和实验验证之间的差距.
相关概念视频
Chemical Reactions in Aqueous Solutions
72.7K
Chemical substances interact in many different ways. Certain chemical reactions exhibit common patterns of reactivity. Due to the vast number of chemical reactions, it becomes necessary to classify them based on the observed patterns of interaction.
72.7K
Aqueous Solutions and Heats of Hydration
18.1K
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
18.1K
Leveling Effect and Non-Aqueous Acid-Base Solutions
9.8K
This lesson defines the leveling effect in acidic and basic solutions and its role in aqueous and non-aqueous solutions. It is essential to understand the competing nature of various species in a chemical system.
The Leveling Effect of a Solvent
A generic acid (HA) reacts with the generic base (B-) to yield the corresponding conjugate base (A-) and conjugate acid (HB):
The Leveling Effect of a Solvent
A generic acid (HA) reacts with the generic base (B-) to yield the corresponding conjugate base (A-) and conjugate acid (HB):
9.8K
Binary Fission
3.3K
Binary fission is the primary mode of asexual reproduction in prokaryotes, such as bacteria. It results in the production of two genetically identical daughter cells. This highly efficient process ensures the rapid propagation of bacterial populations under favorable conditions and involves coordinated cellular and molecular events.DNA Replication and SeparationThe process begins with the replication of the bacterial chromosome. The circular DNA molecule unwinds at a specific origin of...
3.3K
Binary Fission
64.2K
Fission is the division of a single entity into two or more parts, which regenerate into separate entities that resemble the original. Organisms in the Archaea and Bacteria domains reproduce using binary fission, in which a parent cell splits into two parts that can each grow to the size of the original parent cell. This asexual method of reproduction produces cells that are all genetically identical.
64.2K
General Properties of Solutions
36.1K
Many common substances around us exist as a solution, such as ocean water, air, and gasoline. All solutions are mixtures of substances that are composed of varying amounts of two or more types of atoms or molecules. A mixture with a non-uniform composition is a heterogeneous mixture, whereas a mixture with a uniform composition is a homogeneous mixture. The components that make the homogeneous mixture are evenly spread out and thoroughly mixed.
36.1K


