Hsieh Chu-Chin, Tsai Jiun-Horng
Department of Environmental and Safety Engineering, National Yunlin University of Science and Technology, Touliu, 640 Yunlin, Taiwan
Chemosphere. 2003 Jan;50(4):545-56. doi: 10.1016/s0045-6535(02)00275-8.
The field investigations were conducted at four air quality monitoring sites in Southern Taiwan during northeasterly prevailing monsoon to collect 160 data sets on volatile organic compounds (VOCs) to evaluate the ozone formation potential (OFP) of the air mass. The gas chromatograph and high performance liquid chromatography analyzed 58 VOCs and two aldehydes, respectively. Among the four sampling sites, the order of the five VOC classes based on the reactivity approach was different from the concentration-based method. Alkenes as well as aromatics provided a major contribution for the OFP. The relative ranking of the species at the four sites were quite dissimilar. Toluene was the most in abundance at each site. The most abundant species at the windward and leeward sites was different. The reactivity of the air mass at the leeward sites showed a similar pattern and had higher reactivity than the windward sites. Comparisons of the two ratios, xylene/benzene and toluene/benzene were used to assess the relative age of the air parcels and provide evidence of transport.
在台湾南部东北季风盛行期间，于四个空气质量监测站点进行了实地调查，收集了160组挥发性有机化合物（VOCs）数据集，以评估气团的臭氧生成潜力（OFP）。气相色谱仪和高效液相色谱仪分别分析了58种VOCs和两种醛类。在四个采样点中，基于反应活性方法的五类VOCs排序与基于浓度的方法不同。烯烃和芳烃对OFP贡献较大。四个站点物种的相对排名差异很大。每个站点甲苯含量最高。迎风和背风站点含量最高的物种不同。背风站点气团的反应活性呈现相似模式，且比迎风站点的反应活性更高。通过比较二甲苯/苯和甲苯/苯这两个比率来评估气团的相对年龄，并提供传输证据。
