|Title:||植物表面燃油火力電廠黑煙微粒之顯微鏡鑑定||Other Titles:||Microscopic Identification and EDX Analysis of Smoke Particles Deposited on Vegetation Surface Originated from an Oihfired Power Plant||Authors:||孫岩章
|Keywords:||黑煙;火力發電廠;X光微量分析;Smoke;particulate;power plant;X-ray microanalyzer||Issue Date:||Apr-1993||Publisher:||農業試驗所||Start page/Pages:||136-147||Conference:||臺灣地區空氣污染與農業氣象對作物生產影響研討會專輯||Abstract:||
The black smoke particles heavily deposited on the surfaces of calla flowers, mustard and cabbage leaves collected from Ta-Pin hill area of Wanli, Taipei County, and those on the wentan and cabbage leaves at Ma-Shi hill area of Keelung City were found to consist of 1-3 µ light-reflecting black spheres and many submicron amorphous -particulates when observed under a metallurgical microscope. The composition of deposited particles on vegetation surface was found to be similar to that emitted from an oil-fired power plant located about 10 km east from Ta-Pin hill of Wanli, but differed to those from two heavy oilfired boilers from nearby textile factories, one fertilizer factory, one steel refinery and exhausts from various vehicles. Scanning electron microscopy of the deposited 1-3 u particles also showed the same appearance as those collected from the stack of the oil-fired power plant. Further analysis with an energy-dispersive X-ray microanalyzer showed that both particles mostly contained Si and Al, although larger particles collected from electrostatic precipitator of the power plant might contain more S and V other than Si and Al. Sixty petridish samplers from two particle collection stations collected daily from April 1 to May 12, 1991 in the farms at Ta-Pin hill showed that typical 1-3 µ particles deposited on this area everyday, while simultaneous meteorological data indicated that east wind dominated or existed during each collecting day in this period. These evidences revealed that the heavily deposited particles on the vegetation surface were from the upwind power plant 10 km away.
|Appears in Collections:||作物組|
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