The deposition of sulphur in the rainwater in Northern Nigeria

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Date
1973
Authors
Bromfield A.R
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Abstract
The concentration and amounts of SO4-S measured at cleven sites, situated between 350 and 880 kilometre's from the sea, during two rainy seasons in Northern Nigeria. In both years, concentration showed a similar pattern at each site, being greatest. at the beginning and end and smallest at the peak of the rains. The presence of anthropogenic atmosphere at the start of the rains, and of harmattan dust and lower precipitation at the beginning and end of the rains account for the concentration pattern observed. Amounts of 8 deposited ranged from 0.49-1.89. mean 1.14 kg 8/ha. An estimate of dry deposition of S was made from the intercept on the y axis of a plot of amount deposited against rainfall. The dry deposition rates were 0.26 and 0.43 x 10-12 g 8/cm'/s respectively. The agricultural importance of the deposition is briefly discussed.
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East African Agricultural And Forestry Journal, XXVI