Abstract:We studied HCl uptake by MgCl 2 and sea salt over a relative humidity (RH) range from 0% to 34% at 278-313 K using a differential bead-filled flow tube coupled to a high-pressure chemical ionization mass spectrometer. The results showed that dry MgCl 2 and sea salt are essentially inert to gaseous HCl with a probability of less than 10 −6 . However, under humid conditions, HCl was found to be efficiently taken up by wet inorganic surfaces. The HCl uptake coefficient for MgCl 2 and sea salt increased squarely w… Show more
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