The results for the ion chromatography analysis of thefilters sampled in an isokinetic sampler are shown inFig. 6 for velocities of V th = 137 m/s and V th = 262 m/s.The average temperatures obtained in the gas chamberare shown and monitored throughout the test period. Thehighest potassium, chloride, and nitrate concentrationsoccurred at the highest burning temperature (231.5 ºC),as shown in Fig. 6a. The chemical analysis of water-sol-uble ions showed that chloride and potassium mass per-centages reached 35% and 26% of the total ionic mass,respectively. It was found that the predominant ions, K + ,