Preliminary Study of Vertical Distribution of Precipitation Chemistry in Lushan Mountain

The analysis results show that the ion concentration in the rainwater increased with reducing of sampling altitude in Lushan Mountain, but the pH value was opposite trend with altitude. Also, the ion concentration of the precipitation in the rear of the high is different from that of the frontal precipitation, and the ratio of the concentration at the root of the mountain to the concentration at the top of the mountain is also different between the two precipitation systems above mentioned. It would be related to the direction of air flow and the distribution of the pollution sources. The contribution of aerosol to in precipitation was 91.0%. The direction of air flow impacted on the concentration of aerosol. The washout process for different weather and ion conditions also was not similar