Difference in Chemical Composition of Precipitation Collected in Bulk and Wet Only Collectors

摘要

Bulk and wet only collectors precipitation chemistry network were compared. It is found that the average, bulk collectors gave higher concentrations: 35% for calcium, 11% for ammonium, 4.5% for sulphate and 1.7% for nitrate. No difference was observed for hydrogen ion concentration (calculated from pH) and for amount of precipitation. The differences could be several times higher at sites with large local sources of contaminants.