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首页> 外文学位 >Determination of PM compositions and sources in the El Paso del Norte region using time-resolved integrated source and receptor models.
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Determination of PM compositions and sources in the El Paso del Norte region using time-resolved integrated source and receptor models.

机译：使用时间分辨的综合源模型和受体模型确定北埃尔帕索地区的PM成分和源。

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摘要

El Paso-Ciudad Juarez is a non-attainment area for particulate matter (PM), CO and ozone. PM is a general term that describes the existence of suspended particles with a primary or secondary origin. Respirable particles such as PM10 and PM2.5 (particles with an aerodynamic diameter equal to or less than 10 and 2.5 mum, respectively) that can adversely affect human health are of particular concern in the air basin. The purpose of this research is to characterize and analyze PM---particularly in its coarse (PM2.5--10) and fine (PM2.5) size fractions---and to identify its main sources in El Paso-Ciudad Juarez air basin. A special emphasis was done on the analysis of the PM spikes that occur in the Sunland Park area.; Data was collected from the Texas Commission on Environmental Quality (TCEQ) web site for PM and meteorological data. A second database that consists of fine and coarse PM mass concentrations for 36 elements collected in the winter 1999 at five locations throughout the El Paso-Ciudad Juarez air basin has been studied under the perspective of Multivariate Analysis (MA) techniques. Finally a third data set, obtained in the winter season 2002--2003 for the Sunland Park area, was analyzed to determine the elemental and major ion composition of PM and elemental and organic carbon contents of selected samples.; Absolute Principal Components Scores (APCS) analysis, Principal Components Analysis (PCA), and Redundancy Analysis (RDA) were applied to the 3-hr average (6--9 p.m.) Fine Phase I database that included carbon data. A burning activity related source, characterized mainly by Sb, Cl-, and EC emissions coming from the south, had the highest percentage apportionment (∼68%) among all identified sources. The highest fine PM mass concentrations observed at Sunland Park City Yard (SPCY) and TCEQ UTEP monitoring sites were strongly associated with a source or sources located just to the south of the Anapra neighborhood, Ciudad Juarez. The PM10 peaks observed at Sunland Park were predominantly produced by re-suspended dust entrained by the local vehicle traffic during temperature inversions that minimized dispersion and aided transport to the SPCY site by drainage flows.; Principal conclusions from the application of PCA and Chemical Mass Balance (CMB) analyses to the 24-hr average wintertime 1999 fine PM and PM10 databases stated that: (1) a crustal cluster was manifested in all Mexican (Advanced Transformer, Mission, Club 20--30) and American (Chamizal, Sun Metro) sites; (2) other sources such as a non-ferrous smelter, an electroplating process, and the burning of fossil fuels were also identified; and (3) the source apportionments for the fine PM fraction indicated a geologic type source. (Abstract shortened by UMI.)
机译：El Paso-Ciudad Juarez是颗粒物（PM），CO和臭氧的不可到达区域。 PM是一个通用术语，用于描述具有主要或次要来源的悬浮颗粒的存在。在空气盆中，可能会对人体健康产生不利影响的可吸入颗粒物，例如PM10和PM2.5（空气动力学直径分别等于或小于10和2.5微米的颗粒）。这项研究的目的是表征和分析PM（尤其是粗颗粒（PM2.5--10）和细颗粒（PM2.5）），并确定其在埃尔帕索城华雷斯的主要来源空气盆。特别强调了对在Sunland Park地区发生的PM峰值的分析。数据是从德克萨斯州环境质量委员会（TCEQ）网站上收集的PM和气象数据。在多变量分析（MA）技术的视角下，研究了第二个数据库，该数据库由1999年冬季在El Paso-Ciudad Juarez空气盆地的五个位置收集的36种元素的细颗粒和粗颗粒PM浓度组成。最后，分析了在2002--2003年冬季从Sunland Park地区获得的第三组数据，以确定选定样品中PM的元素和主要离子组成以及元素和有机碳含量。将绝对主成分评分（APCS）分析，主成分分析（PCA）和冗余分析（RDA）应用于包括碳数据在内的平均3小时（下午6点至9点）精细I期数据库。在所有确定的源中，与燃烧活动有关的源主要是来自南部的Sb，Cl-和EC排放，其分配比例最高（约68％）。在Sunland Park City Yard（SPCY）和TCEQ UTEP监测站点观察到的最高PM浓度最高浓度与一个城市或一个水源密切相关，这些水源位于Anapra社区华雷斯城南部。在桑兰公园（Sunland Park）观察到的PM10峰值主要是由于在温度反转期间当地车辆的交通带走了再悬浮的尘埃而产生的，这些悬浮尘埃使散布最小化并通过排水流帮助将其运往SPCY。根据PCA和化学物质平衡（CMB）分析对1999年冬季24小时平均PM和PM10数据库的分析得出的主要结论指出：（1）在所有墨西哥（高级变压器，任务20俱乐部）都出现了地壳簇--30）和美国（Chamizal，Sun Metro）网站； （2）还确定了其他来源，例如有色金属冶炼厂，电镀工艺以及化石燃料的燃烧； （3）精细PM组分的源分配表明是地质类型的源。 （摘要由UMI缩短。）

著录项

  • 作者

    Garcia, Jose Humberto.;

  • 作者单位

    The University of Texas at El Paso.;

  • 授予单位 The University of Texas at El Paso.;
  • 学科 Environmental Sciences.; Engineering Environmental.
  • 学位 Ph.D.
  • 年度 2004
  • 页码 320 p.
  • 总页数 320
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境科学基础理论;环境污染及其防治;
  • 关键词

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