Deliquescence Relative Humidity and Reversible Non-deliquescent Water Uptake in the Sodium Salts of Succinic Acid

Deliquescence Relative Humidity and Reversible Non-deliquescent Water Uptake in the Sodium Salts of Succinic Acid
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琥珀酸钠盐的潮解相对湿度和可逆的不潮解吸水量

DOI:
10.1021/acsearthspacechem.1c00168
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发表时间:
2021
影响因子:
3.4
通讯作者:
Beyer, Keith D.
Beyer, Keith D.
中科院分区:
化学3区
文献类型:
--
作者:
Beyer, Keith D.

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当来自海雾和其他来源的金属离子与溶解在大气液滴中的二元酸相互作用时,结果可能是干燥大气条件下有机盐的沉淀。研究了琥珀酸钠(NaHC4H4O4和Na2C4H4O4)的吸湿性能。在298K下,盐类在低于潮解相对湿度(DRH)的相对湿度(RHS)下可逆吸水,在RH值较高时,观察到正常的DRH,并测定了与温度有关的值。其他干燥颗粒的水分含量的增加可能会对这些颗粒上的非均相化学以及它们的光学性质产生影响。
When metal ions from sea spray and other sources interact with dicarboxylic acids dissolved in atmospheric droplets, the results can be the precipitate of organic salts under dry atmospheric conditions. This study focused on the hygroscopic properties of the sodium salts of succinic acid (NaHC4H4O4and Na2C4H4O4). The salts reversibly take up water at relative humidities (RHs) lower than the deliquescence relative humidity (DRH) at 298 K. At higher RH values, a normal DRH is observed and temperature-dependent values were determined. The enhanced water content of otherwise dry particles may have an impact on heterogeneous chemistry on these particles as well as their optical properties.
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