کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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4442408 | 1311151 | 2008 | 13 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effects of organics on efflorescence relative humidity of ammonium sulfate or sodium chloride particles Effects of organics on efflorescence relative humidity of ammonium sulfate or sodium chloride particles](/preview/png/4442408.png)
The effect of a water-soluble organics on efflorescence relative humidity (ERH) of ammonium sulfate or sodium chloride particles is theoretically investigated on the basis of a previously developed model for ERH of single-component particles [Gao et al., 2006. Efflorescence relative humidity for ammonium sulfate particles Journal of Physical Chemistry A 110, 7602–7608]. The central assumption made is that one species nucleates much faster than the other, and the critical nuclei formation of the former controls the rate of efflorescence. The water-soluble organics (WSOs) appeared to suppress the ERH of salt particles; the decrease in ERH can be more than 30% RH when the mole fraction of WSO is larger than 0.5. The developed model satisfactorily makes quantitative prediction only for the ERH of mixed particles containing WSO with low-surface active nature (glycerol, levoglucosan, and malonic acid). For mixed particles having more surface-active WSO (glutaric and maleic acid), the inaccurate prediction is attributable to the negligence of interactions between solutes and the estimation of interfacial tension between nuclei and the mixed solution.
Journal: Atmospheric Environment - Volume 42, Issue 19, June 2008, Pages 4433–4445