• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Differences in Ambient Polycyclic Aromatic Hydrocarbon Concentrations between Streets and Alleys in New York City: Open Space vs. Semi-Closed Space
【2h】

Differences in Ambient Polycyclic Aromatic Hydrocarbon Concentrations between Streets and Alleys in New York City: Open Space vs. Semi-Closed Space

机译：纽约市街道和小巷之间环境多环芳烃浓度的差异：开放空间与半封闭空间

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Background: Outdoor ambient polycyclic aromatic hydrocarbon (PAH) concentrations are variable throughout an urban environment. However, little is known about how variation in semivolatile and nonvolatile PAHs related to the built environment (open space vs. semi-closed space) contributes to differences in concentrations. Methods: We simultaneously collected 14, two-week samples of PAHs from the outside of windows facing the front (adjacent to the street) open side of a New York City apartment building and the alley, semi-closed side of the same apartment unit between 2007 and 2012. We also analyzed samples of PAHs measured from 35 homes across Northern Manhattan and the Bronx, 17 from street facing windows with a median floor level of 4 (range 2–26) and 18 from alley-facing windows with a median floor level of 4 (range 1–15). Results: Levels of nonvolatile ambient PAHs were significantly higher when measured from a window adjacent to a street (an open space), compared to a window 30 feet away, adjacent to an alley (a semi-closed space) (street geometric mean (GM) 1.32 ng/m3, arithmetic mean ± standard deviation (AM ± SD) 1.61 ± 1.04 ng/m3; alley GM 1.10 ng/m3, AM ± SD 1.37 ± 0.94 ng/m3). In the neighborhood-wide comparison, nonvolatile PAHs were also significantly higher when measured adjacent to streets compared with adjacent to alley sides of apartment buildings (street GM 1.10 ng/m3, AM ± SD 1.46 ± 1.24 ng/m3; alley GM 0.61 ng/m3, AM ± SD 0.81 ± 0.80 ng/m3), but not semivolatile PAHs. Conclusions: Ambient PAHs, nonvolatile PAHs in particular, are significantly higher when measured from a window adjacent to a street compared to a window adjacent to an alley, despite both locations being relatively close to street traffic. This study highlights small-scale spatial variations in ambient PAH concentrations that may be related to the built environment (open space vs. semi-closed space) from which the samples are measured, as well as the relative distance from street traffic, that could impact accurate personal exposure assessments.
机译：背景：室外环境中的多环芳烃（PAH）浓度在整个城市环境中都是可变的。但是，关于与建筑环境有关的半挥发性和非挥发性PAH的变化（开放空间与半封闭空间）如何造成浓度差异的原因鲜为人知。方法：我们同时从纽约市一栋公寓楼的前侧（靠近街道）的敞开侧和同一单元之间的半封闭侧的小巷的窗户外侧同时收集了14个为期两周的多环芳烃样品。 2007年和2012年。我们还分析了曼哈顿北部和布朗克斯地区35所房屋的PAHs样本，其中17处地板中位数为4（范围2–26）的临街窗户，18处地板中位数为胡同的窗户4级（范围1–15）。结果：与邻近小巷（半封闭空间）的30英尺远的窗户相比，从邻近街道（开放空间）的窗户进行测量的非易失性环境PAH含量要高得多（街道几何平均值（GM ）1.32 ng / m 3 ，算术平均值±标准偏差（AM±SD）1.61±1.04 ng / m 3 ;胡同GM 1.10 ng / m 3 < / sup>，AM±SD 1.37±0.94 ng / m 3 ）。在整个社区的比较中，与公寓大楼的胡同边相比，在街道旁测量的非易失性PAHs也显着更高（街道GM 1.10 ng / m 3 ，AM±SD 1.46±1.24 ng / m 3 ；胡同GM 0.61 ng / m 3 ，AM±SD 0.81±0.80 ng / m 3 ），但不是半挥发性PAH。结论：与相邻巷道的窗户相比，从邻近街道的窗户测量的环境PAH（尤其是非易失性PAH）要高得多，尽管这两个位置都相对靠近街道交通。这项研究强调了环境PAH浓度的小范围空间变化，该变化可能与测量样品所依据的建筑环境（开放空间与半封闭空间）以及可能影响街道交通的相对距离有关准确的个人接触评估。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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