The amounts of Na+, K+, Ca2+, Fe3+, Mn2+, NH3+, total N, NO3−, Cl−, SO4=, and PO4=, in daily rain-water samples collected during the course of a year were determined. The sources of these ions in the water are discussed, and it is concluded that local dust and Lake Victoria are the principal contributors. Possible correlations of chemical composition with amount of precipitation, wind direction, and lightning flashes were assessed.
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S. A. Visser (1961) studied this question.
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