English  |  正體中文  |  简体中文  |  Items with full text/Total items : 65318/65318 (100%)
Visitors : 21617525      Online Users : 194
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version


    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/28351


    Title: Using a Photochemical Index to Discuss the Ozone Formation and Estimate Hydroxyl Concentration at Downwind Area
    Authors: Tseng,KH;Wang,JL;Kuo,PH;Tsuang,BJ
    Contributors: 中央大學
    Keywords: VOLATILE ORGANIC-COMPOUNDS;PLUME TRAJECTORY MODEL;NEW-YORK-CITY;SOURCE/RECEPTOR RELATIONSHIP;SECONDARY AEROSOLS;PRIMARY POLLUTANTS;CENTRAL TAIWAN;AIR-QUALITY;ATMOSPHERIC CHEMISTRY;DICARBOXYLIC-ACIDS
    Date: 2009
    Issue Date: 2010-06-29 19:46:48 (UTC+8)
    Publisher: 化學研究所
    Abstract: Ozone problem is deteriorating in the mountainous areas in central Taiwan. High level of reactive ozone precursor coming from traffic, industrial activities and vegetation upwind produces ozone episodes in the downwind area. Continuously monitoring of ozone and its precursors with hourly resolution was performed by three photochemical assessment monitoring stations (PAMS) forming a line of upwind, midway and downwind observation. A ratio (ethylbenzene/m, p-xylene) which showed high agreement with ozone concentrations were used as a sensitive photochemical index to represent the degree of photochemical reaction. It was found that both the peaks of the photochemical index and the ozone concentration around noon exhibited a consistent descending order of Jhushan (downwind) > Caotun (midway) > Chonglun (upwind). Furthermore, when coupling photochemical index of the three PAMS with kinetic equations and the trajectory model, OH concentrations were estimated. The results showed that the OH concentration reached the maximum (2.1 x 10(6) - 2.3 x 10(6) molecule/cm(3)) at noon to early afternoon on a daily cycle.
    Relation: AEROSOL AND AIR QUALITY RESEARCH
    Appears in Collections:[化學研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML314View/Open


    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明