HYDROGEN-BONDING AT THE AEROSOL INTERFACE

Morphology-dependent stimulated Raman scattering (MDSRS) has been used to monitor the degree of hydrogen bonding in water aerosols generated by a vibrating orifice aerosol generator (VOAG). The results show tha t aerosols created by a VOAG suffer extensive structural disruption an d that the disruption is most pronounced at the aerosol surface. Labor atory aerosols prepared in this way do not appropriately mimic those f ound in the atmosphere, and the mass accommodation coefficients measur ed using such aerosols should not be used in global climate modeling c alculations.