Fertilizer factories use Low Sulphur Heavy Stock (LSHS) as one of the raw materials for production of urea. Pollutants such as oxides of sulphur, SO2, H2S, ammonia, and CO evolve at various stages of production. The pollutants present in atmospheric air can be instantly measured using various types of dragger tubes. The concentration of pollutants in off gases can be determined by weighted average method. The extent of pollution by CO, NOX, and oxides of sulphur, H2S and ammonia inside a fertilizer plant has been estimated using both methods. The details are presented in this paper.

The study is an attempt to find out the concentration of various types of air pollutants at a fertilizer plant in the manufacturing process of urea. The study concentrates on the effects of air pollutants which may cause serious damage to the atmosphere and to all the living things, and this study is measured by using dragger tubes and waited average method. By using these techniques, the measurement of oxides of sulphur, oxides of nitrogen, ammonia, carbon monoxide, carbon dioxide is found out. The study aims to prove that the gas emitted in the manufacturing process of urea is controlled and kept under the threshold limits.

Environmental Sciences Journal, SWAT Hydrological Model, Upper Bernam River Basin, Malaysia, Soil and Water Assessment Tool, Geographic Information System, Water Resources, Remote Sensing Technology, Agricultural Research Service, Universal Soil Loss Equation, GIS Database, Landsat Thematic Mapper Imageries, Meteorological Data, Government Departments.