原名「台灣學術線上」
包含TAO期刊庫 + TAO書籍庫 + 論文 + 史料文獻
首頁 | 關於TAO | 瀏覽 | 進階查詢 | 參考工具 | 會員服務 | 已購專書 | RSS服務 | 電子報 | FAQ  
查詢範圍:
   
查詢模式:
熱門查詢詞:
dvdDiy扣件原住民教育困境資優生
   
   
   
     
   
 
項次 書目
1
題名:Assessment of Traffic Contribution to Hydrocarbons Using 2,2-Dimethylbutane as a Vehicular Indicator    
著者:Chih-Chung ChangTai-Yih ChenClock ChouShaw-Chen Liu
出版地區:台灣
出版城市:台北市
學科:地球科學
關鍵字:2,2-dimethylbutane ; Non-methane hydrocarbons ; Traffic emissions
刊名:Terrestrial, Atmospheric and Oceanic Sciences
卷期:15卷4期(2004.11)
頁碼:697-711
語言:英語
摘要: 英文摘要PDF

This study investigated the feasibility of using 2,2-dimethylbutane (22DMC4) as an unambiguous indicator for traffic emissions, and applied it to assess traffic contribution to individual hydrocarbons in an atmospheric environment. The concept involves using concentration ratios of individual non-methane hydrocarbons (NMHCs) to 22DMC4, which are characteristic of traffic emissions to reveal excess concentration contributed by non- traffic sources. Air samples from three collections were analyzed for 22DMC4 and other NMHCs simultaneously to examine ratios of NMHCs/22DMC4. Two sample collections were made at different traffic transportation links in Kaohsiung City, and high concentration correlation was observed between 22DMC4 and most NMHCs for samples collected during heavy traffic hours. The third collection was made in the great Kaohsiung metropolitan area for comparison of NMHCs/22DMC4 ratios in different environments. Ratios of toluene/22DMC4 and ethene/22DMC4 obtained from the third collection were significantly greater than those from the two roadside collections in Kaohsiung City, suggesting other sources existed in addition to traffic. Comparing the NMHCs/22DMC4 ratios observed in a given area with the values obtained from pure traffic emissions as a reference can provide a quick diagnosis for non-traffic contributions. Another merit of using NMHCs/22DMC4 ratios of atmospheric components is to provide a basis of normalization, so that direct comparison of emission profiles collected in different times and places is possible.


    

本卷期目次
Terrestrial, Atmospheric and Oceanic Sciences 15卷4期 (2004.11)
Morphology and Dynamic Sedimentology in front of the Retreating Tsengwen Delta, Southwestern Taiwan/ Eason HongTien-Chi HuangHo-Shing Yu
Improvement of GPS/MET Ionospheric Profiling and Validation Using the Chung-Li Ionosonde Measurements and the IRI model/ Lung-Chih TsaiWei-Hsiung Tsai
Investigating Subsurface Structures and P- and S-wave Velocities in the Taipei Basin/ Chien-Ying WangYi-Hen LeeMang-Long GerYi-Ling Chen
Analyzing the Relationship between Terminal Velocity of Raindrops and VHF Backscatter from Precipitation/ Ching-Lun SuYen-Hsyang ChuChun-Yi Chen
Relocation of Eastern Taiwan Earthquakes and Tectonic Implications/ Hao KuochenYih-Min WuChien-Hsin ChangJyr-Ching HuWen-Shan Chen
Multi-station Studies on Spread-F and VHF Scintillations in the Indian Sector/ P. V. S. Rama RaoD. S. V. V. D. PrasadK. NiranjanG. UmaS. Gopi KrishnaK. Venkateswarlu
Coseismic Movement and Seismic Ground Motion Associated with the 31 March 2002 off Hualien, Taiwan, Earthquake/ Horng-Yue ChenLong-Chen KuoShui-Beih Yu
Assessment of Traffic Contribution to Hydrocarbons Using 2,2-Dimethylbutane as a Vehicular Indicator/ Chih-Chung ChangTai-Yih ChenClock ChouShaw-Chen Liu
Ethology of the Zoophycos-Producer: Arguments Against the Gardening Model from δ13Corg Evidences of the Spreiten Material/ Ludvig LowemarkIn-Tian LinChung-Ho WangChih-An HuhKuo-Yen WeiChih-Wei Chen
Source Parameters of Regional Earthquakes in Taiwan: January-December, 2002/ Wen-Tzong LiangYu-Hua LiuHonn Kao
An Improved Estimate of Layer Thickness in the Atmosphere Using Dual-Frequency Interferometry Method of MST-VHF Radar/ Jenn-Shyong ChenYen-Hsyang Chu
 
   
 
   

與TAO合作 | 隱私與版權聲明 | 聯絡方式 | 下載Adobe Reader
地址:台北市中正區(100)北平東路30-12號3樓
電話:(02)2393-6968 傳真:(02)2393-6877
Email: service@wordpedia.com
Wordpedia Family: 學校、企業版入口 | 遠流影音館
Copyright©2011 Wordpedia Co., Ltd. All Rights Reserved.