A new technique for real-time measurements of potassium and sodium aerosols based on field-reversal surface ionization

Abstract A new method for real-time measurements of potassium and sodium containing aerosol particles is described verified. The based on surface ionization technique may be used to explore the alkali chemistry related high temperature processes. measurement device a further development simple cost-effective detector previously online in combustion gasification research. discrimination between possible due differences their desorption kinetics facilitated by rapidly reversing field potential ion source nearby collector. instrument evaluated series laboratory experiments using size-selected salt KCl, NaCl, K 2 SO 4 , Na KNO 3 NaNO . filament was found key influencing factor order optimize strength Na–K deviation observed current. ability simultaneously report absolute concentrations makes attractive solid fuel conversion alkali-rich fuels such as low-grade biomass behavior deviations