...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental research >A dramatic shift in CO and CH_4 levels at urban locations in Korea after the implementation of the Natural Gas Vehicle Supply (NGVS) program
【24h】

A dramatic shift in CO and CH_4 levels at urban locations in Korea after the implementation of the Natural Gas Vehicle Supply (NGVS) program

机译：实施天然气汽车供应（NGVS）计划后，韩国城市地区的CO和CH_4水平发生了巨大变化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Concentrations of carbon monoxide (CO) and methane (CH_4) in air were measured at both urban roadside (U-RS) and urban background (U-BG) stations in Seoul, Korea over an 11 yr period (1996-2006). The overall mean values of CO were 1.16 ± 0.63 (U-RS) and 1.08 ± 0.77 ppm (U-BG), while those of CH_4 were 2.24 ± 0.42 (U-RS) and 2.06 ± 0.31 ppm (U-BG). The diurnal patterns of CO tended to peak near rush hour, while those of CH_4 showed increases at night. An examination of the seasonal data showed that the CO values were consistently higher during winter, while CH_4 values were highly variable across seasons with relatively large spatial variations. Because of the noticeable change in air quality parameters after the year 2000, the mean data for both compounds were examined between 1996-2000 (period Ⅰ) and 2001-2006 (period Ⅱ). The analysis of long-term trends revealed that the concentrations of both compounds decreased very rapidly during period Ⅰ, while changes were not significant during period Ⅱ. The results of this comparative study confirm that both urban locations have experienced dramatic changes in the major pollutant levels, particularly in CO after the implementation of the Natural Gas Vehicle Supply (NGVS) program.
机译：在11年（1996-2006年）期间，分别在韩国首尔的城市路边（U-RS）和城市背景（U-BG）站测量了空气中一氧化碳（CO）和甲烷（CH_4）的浓度。 CO的总体平均值为1.16±0.63（U-RS）和1.08±0.77 ppm（U-BG），而CH_4的平均值为2.24±0.42（U-RS）和2.06±0.31 ppm（U-BG）。一氧化碳的日变化趋势倾向于在高峰时段附近达到峰值，而CH_4的昼夜变化趋势则在夜间有所增加。对季节数据的检查表明，冬季的CO值始终较高，而CH_4值在各个季节之间变化较大，且空间变化较大。由于2000年以后空气质量参数的显着变化，因此对1996-2000年（Ⅰ期）和​​2001-2006年（Ⅱ期）两种化合物的平均数据进行了检查。长期趋势分析表明，两种化合物的浓度在Ⅰ期均迅速下降，而在Ⅱ期则无明显变化。这项比较研究的结果证实，两个城市地区的主要污染物水平都发生了巨大变化，尤其是在实施天然气车辆供应（NGVS）计划后，二氧化碳排放量尤其如此。

著录项

  • 来源
    《Environmental research》 |2010年第4期|396-409|共14页
  • 作者

    Hang Thi Nguyen; Ki-Hyun Kim; C.-J. Ma; S.-J. Cho; Jong Ryeul Sohn;

  • 作者单位

    Department of Earth & Environmental Sciences, Sejong University, Seoul 143-747, Republic of Korea;

    Department of Earth & Environmental Sciences, Sejong University, Seoul 143-747, Republic of Korea;

    Department of Environmental Science, Fukuoka Women's University, Fukuoka 813-8529, Japan;

    Seoul Metropolitan Institute of Public Health and Environment, Seoul 137-734, Republic of Korea;

    Department of Environmental Health, Korea University, Seoul 136-703, Republic of Korea;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    carbon monoxide; methane; long-term; natural gas vehicle; urban roadside;

    机译：一氧化碳;甲烷长期;天然气汽车城市路边;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号