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Saline mineral dust particles absorb moisture from atmosphere
 
Date:2019-10-30  Source:Xinhua
 Chinese researchers have demonstrated that the saline mineral dust particles in the atmosphere can absorb moisture in different degrees, according to a recent study paper in the Journal of Geophysical Research: Atmosphere.

Mineral dust particles, emitted from saline topsoil in arid and semi-arid regions into the atmosphere, were commonly considered having weak moisture absorption.

There have been reports that a certain amount of water-soluble salt was contained within the mineral dust particles.

Researchers from the Guangzhou Institute of Geochemistry of the Chinese Academy of Sciences investigated hygroscopic properties, or moisture absorption, of 13 saline mineral dust samples collected from different locations by measuring sample mass change at different relative humidity.

They also measured the samples' chemical and mineralogical compositions.

The results showed that the moisture absorption of the saline mineral dust particles differed due to mineral compositions and water-soluble ions.

The results are expected to improve the understanding of moisture absorption of saline mineral dust particles and their atmospheric chemistry and interaction with different climates. 

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