Mass size distribution of particle-bound water
The thermal-ramp Karl-Fisher method (tr-KF) for the determination of PM-bound water has been applied
to size-segregated PM samples collected in areas subjected to different environmental conditions
(protracted atmospheric stability, desert dust intrusion, urban atmosphere). This method, based on the
use of a thermal ramp for the desorption of water from PM samples and the subsequent analysis by the
coulometric KF technique, had been previously shown to differentiate water contributes retained with