Wu Yuh-Shen, Fang Guor-Cheng, Fu Peter Pi-Cheng, Yang Chang-Ju
Air Toxic and Environmental Analysis Laboratory, Hungkuang Institute of Technology, Taichung, 433, Taiwan.
J Environ Sci Health C Environ Carcinog Ecotoxicol Rev. 2002 May;20(1):45-59. doi: 10.1081/GNC-120003928.
During June 1998 and February 2001, the experiments of this study were conducted at four sampling sites (THUPB, THUC, HKIT and CCRT) with different characters (suburban, rural and traffic). The chemical components (Cl-, Na+, K+, Mg2+, Ca2+, Fe, Zn, Pb, Ni) in suspended particle were also analyzed simultaneously. The particulate mass concentrations are higher in the traffic site (CCRT) than the other sampling sites in this study. This is because that high traffic density flow characterized CCRT sampling site. Besides, the fine particle (PM2.5) concentration was the dominant species out of the total suspended particles in central Taiwan, Taichung. The same phenomenon is found in most of cities around the world. Moreover, chloride, nitrate sulfate and ammonium are higher in Taiwan than other sampling sites in the world. The results also indicated that the control of acidic and secondary aerosol pollutants have become an important issue in Taiwan. In addition, mutagenic assays on the organic extracts of airborne particulates at different sampling sites were also conducted in central Taiwan. The data obtained here also reflected that the mutagenicity of the suspended particulates are significantly higher in winter period than it occurred in summer period.
1998年6月至2001年2月期间，本研究的实验在四个具有不同特征（郊区、农村和交通区）的采样点（THUPB、THUC、HKIT和CCRT）进行。同时还分析了悬浮颗粒中的化学成分（Cl-、Na+、K+、Mg2+、Ca2+、Fe、Zn、Pb、Ni）。在本研究中，交通区采样点（CCRT）的颗粒物质量浓度高于其他采样点。这是因为CCRT采样点的交通流量密度高。此外，在台湾中部的台中市，细颗粒物（PM2.5）浓度是总悬浮颗粒物中的主要成分。世界上大多数城市都发现了同样的现象。此外，台湾地区的氯化物、硝酸盐、硫酸盐和铵含量高于世界上其他采样点。结果还表明，控制酸性和二次气溶胶污染物已成为台湾地区的一个重要问题。此外，还在台湾中部对不同采样点的空气传播颗粒物有机提取物进行了致突变性检测。此处获得的数据还反映出，悬浮颗粒物的致突变性在冬季明显高于夏季。
