Original scientific paper
Season's influence on the relationship between mass concentrations of sulphur dioxide and sulphate in the air
M. Gentilizza
; Institut za medicinska istraživanja i medicinu rada, Zagreb, Hrvatska
V. Vađić
; Institut za medicinska istraživanja i medicinu rada, Zagreb, Hrvatska
M. Fugaš
; Institut za medicinska istraživanja i medicinu rada, Zagreb, Hrvatska
J. Hršak
; Institut za medicinska istraživanja i medicinu rada, Zagreb, Hrvatska
J. Kukulj
; Institut za medicinska istraživanja i medicinu rada, Zagreb, Hrvatska
Abstract
The relationship between sulphur dioxide and sulphate was studied in natural conditions, in two urban areas with different levels of air pollution during the winter and summer periods. About fifty samples of sulphur dioxide, smoke and suspended particulates were collected and analysed on each measuring site during the season. In the sample of suspended particulates the total mass concentration of suspended particulates, sulphate, calcium, lead, iron, manganese and copper was determined. The correlation between sulphate and sulphur dioxide, suspended particulates, smoke and some suspended particulate's components was studied by seasons. A good correlation was found between the concentration of sulphate and suspended particulates. The concentration levels of sulphur dioxide, smoke, sulphate and suspended particulates were significantly higher during the winter period in both areas. On both locations the average mass fraction of sulphate (about 10%) in suspended particulates was nearly the same during the winter and summer periods. The calculated equation regressions for the relationship between sulphate S and total S (sulphate and sulphur dioxide) for the summer and winter period are reciprocally different. It seems that the season's influence on the relationship between sulphur dioxide and sulphate might be due to a different origin and different levels of suspended particulates in the air.
Keywords
Hrčak ID:
159163
URI
Publication date:
28.7.1981.
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