Measurement of SO2 in Nairobi

Abstract

Sulphur dioxide in the atmosphere at Nairobi industrial area and its environs was measured using pararosaniline method. Higher concentrations were recorded in the morning hours (14.2-112.0μgm3) than in the afternoon (14.2-112μgm3). The industrial area had higher monthly average concentrations (57.2-143.2μgm3)than residential sites (18.2-64.3μ3 ). The months characterised by unfavourable dispersion conditions (June-September) showed higher concentrations (15.5-175.5μgm3) than those months with favourable dispersion conditions (October-November): (14.2-157.8μgm3)