The relationship between the mass concentrations of sulphate and sulphur dioxide in air polluted with cement dust.

The relationship between the mass concentrations of sulphate and SO2 in air was studied over a 1-year period in an area polluted by cement dust. The relationship is described by the equation y = axb, where y is the percentage of sulphate sulphur in total sulphur (sulphate and SO2) and x is the mass concentration of the total sulphur content of the air. According to our previous results, coefficients a and b are characteristic of urban and industrial areas. In the investigated area polluted by cement dust, coefficients a and b characteristic of industrial areas were obtained only during the summer period when cement dust particles predominated. In the winter and over the 1-year period, the influence of other particulate components, which were probably products of fuel combustion, predominated. They were detected because the measuring site was located about 1 km from urban settlements.