...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Human Ammonia Emission Rates under Various Indoor Environmental Conditions
【24h】

Human Ammonia Emission Rates under Various Indoor Environmental Conditions

机译：各种室内环境条件下的人氨排放率

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

Ammonia (NH_3) is typically present at higher concentrations in indoor air (～10-70 ppb) than in outdoor air (～50 ppt to 5 ppb). It is the dominant neutralizer of acidic species in indoor environments, strongly influencing the partitioning of gaseous acidic and basic species to aerosols, surface films, and bulk water. We have measured NH_3 emissions from humans in an environmentally controlled chamber. A series of experiments, each with four volunteers, quantified NH_3 emissions as a function of temperature (25.1-32.6 ℃), clothing (long-sleeved shirts/pants or T-shirts/shorts), age (teenagers, adults, and seniors), relative humidity (low or high), and ozone (＜2 ppb or ～35 ppb). Higher temperature and more skin exposure (T-shirts/shorts) significantly increased emission rates. For adults and seniors (long clothing), NH_3 emissions are estimated to be 0.4 mg h~(-1) person~(-1) at 25 ℃, 0.8 mg h~(-1) person~(-1) at 27 ℃, and 1.4 mg h~(-1) person~(-1) at 29 ℃, based on the temperature relationship observed in this study. Human NH_3 emissions are sufficient to neutralize the acidifying impacts of human CO_2 emissions. Results from this study can be used to more accurately model indoor and inner-city outdoor NH_3 concentrations and associated chemistry.
机译：室内空气（〜10-70 ppb）中的氨（NH_3）浓度通常高于室外空气（〜50 ppt至5 ppb）中的氨。它是室内环境中酸性物质的主要中和剂，强烈影响气态酸性和碱性物质向气溶胶，表面膜和大量水的分配。我们已经在环境受控的室内测量了人类排放的NH_3。一系列实验，每个实验有四名志愿者，量化了NH_3排放随温度（25.1-32.6℃），衣服（长袖衬衫/裤子或T恤/短裤），年龄（青少年，成年人和老年人）的函数，相对湿度（低或高）和臭氧（＜2 ppb或〜35 ppb）。更高的温度和更多的皮肤暴露（T恤/短裤）显着提高了排放率。对于成年人和老年人（长衣），在25℃时NH_3排放估计为0.4 mg h〜（-1）人〜（-1），在27℃时为0.8 mg h〜（-1）人〜（-1）。根据本研究中观察到的温度关系，在29℃时为1.4 mg h〜（-1）person〜（-1）。人类的NH_3排放足以抵消人类的CO_2排放的酸化影响。这项研究的结果可用于更准确地模拟室内和城市室外的NH_3浓度及相关化学物质。

著录项

  • 来源
    《Environmental Science & Technology》 |2020年第9期|5419-5428|共10页
  • 作者

    Mengze Li; Charles J. Weschler; Gabriel Bekö; Pawel Wargocki; Gregor Lucic; Jonathan Williams;

  • 作者单位

    Max Planck Institute for Chemistry 55128 Mainz Germany;

    International Centre for Indoor Environment and Energy Department of Civil Engineering Technical University of Denmark Lyngby 2800 Denmark Environmental and Occupational Health Sciences Institute Rutgers University Piscataway New Jersey 08854 United States;

    International Centre for Indoor Environment and Energy Department of Civil Engineering Technical University of Denmark Lyngby 2800 Denmark;

    International Centre for Indoor Environment and Energy Department of Civil Engineering Technical University of Denmark Lyngby 2800 Denmark;

    Picarro Inc. Santa Clara California 95054 United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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