Fang Guor-Cheng, Wu Yuh-Shen, Wen Chih-Chung, Huang Shih-Han, Rau Jui-Yeh
Air Toxic and Environmental Analysis Laboratory, Hungkuang University, Sha-Lu, Taichung 433, Taiwan.
J Hazard Mater. 2006 Sep 1;137(1):314-23. doi: 10.1016/j.jhazmat.2006.02.017. Epub 2006 Mar 6.
The purpose of this study is to characterize metallic elements associated with atmospheric particulate matter of total suspended particulate (TSP), fine particle (particle matter with aerodynamical diameter <2.5 microm, PM(2.5)), coarse particle (particle matter with aerodynamical diameter 2.5-10 microm, PM (2.5-10)) at the Taichung Harbor (TH) and WuChi Traffic (WT) sampling site of central Taiwan during March 2004 to February 2005. The result indicated the average total suspended particulate concentration in 1 year was 157.31 and 112.58 microg m(-3) at TH and WT sampling site, respectively. Fine particle (PM(2.5)) size was the dominant species at TH and WT sampling site. In TH sampling site, higher correlation coefficient was observed on total suspended particulates of metallic elements Fe and Zn. And in WT sampling site, higher correlation coefficients displayed on total suspended particulates of metallic elements Fe and Zn, Fe and Mn. Ambient airborne particle principal component analysis of metallic metals was used to identify the possible pollutant sources in this study. At the TH sampling site, 50.81% of the total variance of the data was observed in factor 1. Higher loading of Fe (0.86), Zn (0.79), Pb (0.76), and Mn (0.68) were contributed by traffic emission and the soil source. At the WT sampling site, factor 1 explained 53.74% of the total variance of the data and had high loading for Zn (0.86) and Cu (0.85), which were identified as industrial/traffic emission sources.
本研究的目的是对2004年3月至2005年2月期间台湾中部台中港（TH）和梧栖交通（WT）采样点与总悬浮颗粒物（TSP）、细颗粒物（空气动力学直径<2.5微米的颗粒物，PM(2.5)）、粗颗粒物（空气动力学直径2.5 - 10微米的颗粒物，PM (2.5 - 10)）相关的金属元素进行表征。结果表明，TH和WT采样点1年中总悬浮颗粒物的平均浓度分别为157.31和112.58微克/立方米。细颗粒物（PM(2.5)）在TH和WT采样点占主导地位。在TH采样点，金属元素铁和锌在总悬浮颗粒物上呈现出较高的相关系数。而在WT采样点，金属元素铁和锌、铁和锰在总悬浮颗粒物上显示出较高的相关系数。本研究采用环境空气颗粒物金属主成分分析来识别可能的污染源。在TH采样点，数据总方差的50.81%出现在因子1中。交通排放和土壤源对铁（0.86）、锌（0.79）、铅（0.76）和锰（0.68）有较高的贡献。在WT采样点，因子1解释了数据总方差的53.74%，并且对锌（0.86）和铜（0.85）有较高的载荷，它们被确定为工业/交通排放源。
