The dissolution of metals within aerosol particles is meaningful to evaluate the bioavailability and mobility of metals. Total suspended particles( TSP) samples were collected in Shanghai. We extracted the water soluble and acid soluble( p H = 2) metals by the mini-recirculation-leach-system and measured their concentrations by the high resolution inductively coupled plasma mass spectrometry. The dissolution kinetics were rapid,the maximum solubility of metals could be reached in a few minutes. Overall,the ...