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 (

中文翻译：

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甲磺酸盐吸湿性的综合表征

摘要 甲磺酸盐是二甲硫醚在大气中氧化形成的，在海洋气溶胶中含量丰富；然而，其吸湿性尚未得到很好的理解。在这项工作中，采用两种互补技术（蒸汽吸附分析仪和湿度串联差分迁移率分析仪）来研究 CH3SO3Na、CH3SO3K 和 (CH3SO3)2Ca 在不同相对湿度 (RH) 下的吸湿特性。CH3SO3Na 在 15-35°C 时的潮解相对湿度测量为 70-71%，显示不依赖于温度。相对于 70% RH，质量在 90% RH 时发生变化，同时由于非常低的 RH (