English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 18033/20233 (89%)
造訪人次 : 23240811      線上人數 : 281
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: https://ir.cnu.edu.tw/handle/310902800/27029


    標題: Carboxylic acids in PM2.5 over Pinus morrisonicola forest and related photoreaction
    作者: Kuo, Su-Ching
    Ying, I.Tsai
    Tsai, Cheng-Hsien
    Hsieh, Li-Ying
    貢獻者: 醫藥化學系
    環境工程與科學系
    關鍵字: Carboxylic acids
    Coniferous forest
    Raman spectroscopy
    Photooxidation
    Maleic acid
    Tartaric acid
    日期: 2011-12
    上傳時間: 2013-10-23 15:21:24 (UTC+8)
    出版者: Elsevier
    摘要: The PM2.5 aerosol from within an area of Pinus morrisonicola Hayata in Taiwan was collected and analyzed for its low molecular weight carboxylic acid (LMWCAs) content. Oxalic acid was the major LMWCA in the aerosol, followed by acetic, tartaric and maleic acids. This differs significantly from the LMWCA composition of PM2.5 aerosol reported for a southern Taiwan suburban region (oxalic > succinic > malonic) [Atmospheric Environment 42, 6836-6850 (2008)]. P. morrisonicola Hayata emits oxalic, malic and formic acids and yet there was an abundance of maleic and tartaric acids in the PM2.5 forest aerosol, indicating that tartaric acid is derived from the transformation of other P. morrisonicola Hayata emissions. Raman spectroscopy was applied and 28 species of LMWCAs and inorganic species were identified. The photochemical mechanisms of maleic and tartaric acids were studied and it was found that the abundant tartaric acid in forest aerosol is most probably the photochemical product from reactions of maleic acid. Furthermore, tartaric acid is photochemically transformed into formic acid and ultimately into CO2. (C) 2011 Elsevier Ltd. All rights reserved.
    關聯: Atmospheric Environment, 45(37), pp.6741-6750
    顯示於類別:[食藥產業暨檢測科技系(含五專)] 期刊論文
    [環境工程與科學系(所)] 期刊論文

    文件中的檔案:

    檔案 描述 大小格式瀏覽次數
    index.html0KbHTML1872檢視/開啟


    在CNU IR中所有的資料項目都受到原著作權保護.

    TAIR相關文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回饋