دورية أكاديمية
In situ measurements of speciated atmospheric mercury and the identification of source regions in the Mexico City Metropolitan Area
| العنوان: | In situ measurements of speciated atmospheric mercury and the identification of source regions in the Mexico City Metropolitan Area |
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| المؤلفون: | Rutter, A. P., Snyder, D. C., Stone, E. A., Schauer, J. J., Gonzalez-Abraham, R., Molina, Luisa Tan, Marquez, C., Cardenas, B., de Foy, B. |
| المساهمون: | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences, Molina, Luisa Tan |
| المصدر: | Copernicus |
| بيانات النشر: | European Geosciences Union / Copernicus |
| سنة النشر: | 2008 |
| المجموعة: | DSpace@MIT (Massachusetts Institute of Technology) |
| الوصف: | In order to expand the currently limited understanding of atmospheric mercury source-receptor relationships in the Mexico City Metropolitan Area, real time measurements of atmospheric mercury were made at a downtown urban site, and a rural site on the outskirts of Mexico City, during March 2006. Numerous short-lived increases in particulate mercury (PHg) and reactive gaseous mercury (RGM) concentrations were observed at the urban site during the 17 day study, and less frequent increases in gaseous elemental mercury (GEM) concentrations were measured at both the urban and rural sites. The episodic increases observed were attributed to plume impacts from industrial point source emissions in and around Mexico City. Average concentrations and standard deviations measured during the study were as follows: i) urban site; PHg=187±300 pg m−3 [m superscript -3], RGM=62±64 pg m−3 [m superscript -3], GEM=7.2±4.8 ng m−3 [m superscript -3], and; ii) rural site; GEM=5.0±2.8 ng m−3 [m superscript -3]. Several source regions of atmospheric mercury to the urban and rural sites were determined using Concentration Field Analysis, in which atmospheric mercury measurements were combined with back trajectory data to determine source regions. Only some source regions correlated to mercury emission sources listed in the Federal Pollutant Release and Transfer Register, leaving the rest unaccounted for. Contributions of anthropogenic mercury point sources in and around Mexico City to concentration averages measured at the urban site during the study were estimated to be: 93±3% of reactive mercury (PHg and RGM), and; 81±0.4% of GEM. Point source contributions to GEM measured at the rural site were 72±1%. GEM and reactive mercury (PHg+RGM) were not found to correlate with biomass burning at either of the measurement sites. ; National Science Foundation (U.S.) (Grant 0514280) ; National Science Foundation (U.S.) (Grant 0511803) ; Science to Achieve Results Program (U.S.) (Grant R829798) ; United States. Environmental Protection Agency |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1680-7324 1680-7316 |
| العلاقة: | http://dx.doi.org/10.5194/acp-9-207-2009Test; Atmospheric Chemistry and Physics; http://hdl.handle.net/1721.1/65345Test; Rutter, A. P. et al. “In Situ Measurements of Speciated Atmospheric Mercury and the Identification of Source Regions in the Mexico City Metropolitan Area.” Atmospheric Chemistry and Physics 9.1 (2009) : 207-220. © Author(s) 2009; orcid:0000-0002-3596-5334 |
| الإتاحة: | https://doi.org/10.5194/acp-9-207-2009Test http://hdl.handle.net/1721.1/65345Test |
| حقوق: | Creative Commons Attribution 3.0 ; http://creativecommons.org/licenses/by/3.0Test |
| رقم الانضمام: | edsbas.712ED920 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 16807324 16807316 |
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