Liya Guo, Chao Peng, T. Zong
Mar 1, 2020
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Journal
Atmospheric Environment
Abstract
Abstract Methanesulfonate, formed in atmospheric oxidation of dimethyl sulfide, is abundant in marine aerosols; however, its hygroscopic properties have not been well understood. In this work, two complementary techniques (a vapor sorption analyzer and a humidity tandem differential mobility analyzer) were employed to investigate hygroscopic properties of CH3SO3Na, CH3SO3K and (CH3SO3)2Ca at different relative humidities (RH). The deliquescence relative humidities were measured to be 70–71% for CH3SO3Na at 15–35 °C, displaying no dependence on temperature. The mass changes at 90% RH, relative to that at 70% RH, while continuous growth since very low RH (