Particulate Matter Concentrations in the Vicinity of an Incinerator  

作　　者：Kristine Walungama Endjambi Onjefu Sylvanus Ameh Nnenesi Kgabi Innocent Maposa Ndinomholo Hamatui Kristine Walungama Endjambi;Onjefu Sylvanus Ameh;Nnenesi Kgabi;Innocent Maposa;Ndinomholo Hamatui(Department of Health Sciences, Namibia University of Science and Technology, Windhoek, Namibia;Department of Natural and Applied Sciences, Namibia University of Science and Technology, Windhoek, Namibia;Department of Civil and Environmental Engineering, Namibia University of Science and Technology, Windhoek, Namibia;Department of Mathematics and Statistics, Namibia University of Science and Technology, Windhoek, Namibia)

机构地区：[1]Department of Health Sciences, Namibia University of Science and Technology, Windhoek, Namibia [2]Department of Natural and Applied Sciences, Namibia University of Science and Technology, Windhoek, Namibia [3]Department of Civil and Environmental Engineering, Namibia University of Science and Technology, Windhoek, Namibia [4]Department of Mathematics and Statistics, Namibia University of Science and Technology, Windhoek, Namibia

出　　处：《Journal of Geoscience and Environment Protection》2016年第12期88-100,共13页地球科学和环境保护期刊（英文）

摘　　要：Incineration is an effective way of health care waste management, but it is also a source of air pollution. Thermal decomposition of organic and inorganic waste during incineration releases a large concentration of air pollutants such as CO, SO₂, NOx, CO₂ and particulate matter (PM). A cross sectional-descriptive study was conducted to determine the short-term variations in PM concentrations across various areas in the vicinity of a local incinerator in Windhoek, Namibia. XRF Qualitative analysis method was used to determine the elemental composition of fallout dust concentration from six study areas/stations in the vicinity of a local incinerator. Single bucket fallout monitors were deployed following the American Society for Testing and Materials standard method for collection and analysis of dust fallout to determine the elemental composition of fallout dust. Real-time PM concentration trends were also recorded using a portable Micro dust Pro Real-time Dust Monitor for PM10 at a height of 2.2 m above the ground. High PM concentration peaks were observed in the morning and afternoon hours at varying points. The fallout dust rate ranged between highest 1839.3 mg/m2/day at sampling Point 4 and lowest 711 mg/m2/day at sampling Point 2. The XRF analysis revealed the presence of toxic elements and crustal elements in order of decreasing abundance: Mn > Zn > Cr > V > Zr > Sr > Pb > Ni and SI > K > Fe > Ti > Ca > Al > P respectively. Highest elemental composition concentrations were found at sampling location in the vicinity of the incinerator and in industrial area.Incineration is an effective way of health care waste management, but it is also a source of air pollution. Thermal decomposition of organic and inorganic waste during incineration releases a large concentration of air pollutants such as CO, SO₂, NOx, CO₂ and particulate matter (PM). A cross sectional-descriptive study was conducted to determine the short-term variations in PM concentrations across various areas in the vicinity of a local incinerator in Windhoek, Namibia. XRF Qualitative analysis method was used to determine the elemental composition of fallout dust concentration from six study areas/stations in the vicinity of a local incinerator. Single bucket fallout monitors were deployed following the American Society for Testing and Materials standard method for collection and analysis of dust fallout to determine the elemental composition of fallout dust. Real-time PM concentration trends were also recorded using a portable Micro dust Pro Real-time Dust Monitor for PM10 at a height of 2.2 m above the ground. High PM concentration peaks were observed in the morning and afternoon hours at varying points. The fallout dust rate ranged between highest 1839.3 mg/m2/day at sampling Point 4 and lowest 711 mg/m2/day at sampling Point 2. The XRF analysis revealed the presence of toxic elements and crustal elements in order of decreasing abundance: Mn > Zn > Cr > V > Zr > Sr > Pb > Ni and SI > K > Fe > Ti > Ca > Al > P respectively. Highest elemental composition concentrations were found at sampling location in the vicinity of the incinerator and in industrial area.

关 键 词：Particulate Matter Fallout Dust Concentration INCINERATORS Windhoek 

分 类 号：X70[环境科学与工程—环境工程]