標題: Measurements of ultrafine particle concentrations and size distribution in an iron foundry
作者: Cheng, Yu-Hsiang
Chao, Yen-Chi
Wu, Cheng-Han
Tsai, Chuen-Jinn
Uang, Shi-Nian
Shih, Tung-Sheng
環境工程研究所
Institute of Environmental Engineering
關鍵字: ultrafine particles;number concentration;surface area concentration;scanning mobility particle sizer;iron foundry
公開日期: 1-Oct-2008
摘要: The number and surface area concentration of ultrafine particles in an iron foundry is of interest as freshly generated ultrafine particles are produced by metal melting, pouring and molding processes. This study measured the number and surface area concentrations of ultrafine particles and their size distributions in an iron foundry using a scanning mobility particle sizer (SMPS). The 10-100 nm ultafine particle number concentrations (NC0.01-0.1) and surface area concentrations (SC0.01-0.1) measured at the iron foundry were 2.07 x 10(4) to 2.82 x 10(5) particles cm(-3) and 67.56 to 2.13 x 10(3) mu m(2) cm(-3), respectively. The concentrations changed dramatically depending on on-site manufacturing conditions. The NC0.01-0.1 levels in the iron foundry were approximately 4.5 times higher on average compared with those in the outdoor ambient environment. These measurement results indicate that the presence of extra particles in the workplace air is within the ultrafine range. Additionally, the analytical results suggest that the number mode diameter can be used to estimate the SC0.01-0.1 levels using the NC0.01-0.1 levels. Moreover. the ultrafine particle number mode diameter was found to be about 46.1 nm in the iron foundry. (C) 2008 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.jhazmat.2008.01.036
http://hdl.handle.net/11536/8317
ISSN: 0304-3894
DOI: 10.1016/j.jhazmat.2008.01.036
期刊: JOURNAL OF HAZARDOUS MATERIALS
Volume: 158
Issue: 1
起始頁: 124
結束頁: 130
Appears in Collections:Articles


Files in This Item:

  1. 000258900500013.pdf

If it is a zip file, please download the file and unzip it, then open index.html in a browser to view the full text content.