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首页> 外文会议>Specialty Conference on Emission Inventory: Living in a Global Environment Vol.1 Dec 8-10, 1998, New Orleans, LA >Dry Deposition of Metals in Mexico City Metropolitan Area (MCMA)
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Dry Deposition of Metals in Mexico City Metropolitan Area (MCMA)

机译：墨西哥城都会区（MCMA）的金属干法沉积

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The Emission Inventory for Mexico City Metropolitan Area (MCMA) called DATGEN, developed by National Institute of Ecology, includes information on five criteria pollutants (O3, NOx, SOx, CO and PST). However, the database also contains important information on industries using raw materials and output processes that can be linked to metals emissions to the atmosphere. A sampling campaign of the Acid Deposition Program was conducted during 1997. Dry deposition samples were obtained at 10 sites in the MCMA. The chemical analyses show the presence of metals such as Aluminum (Al), Copper (Cu), Iron (Fe), Manganese (Mn), Lead (Pb), Zinc (Zn) among others These metals were classified at time intervals according to their concentration in % weight. A deposition flux (mg/d.m2) study was done using spatial distribution maps of elements with more than 0.01% of sample weight. The results show the distribution of these metals in the MCMA atmosphere. In spite of some elements appearing in small concentrations, they could still cause damage to the aquatic and terrestrial environment, to human health, and also metals like Fe and Mn participate as catalysts in SO2 oxidation which is an acid rain precursor. This study precedes studies of metals in wet deposition and additional studies of metals in dry deposition. Quality assurance procedures were conducted in order to obtain data on accuracy, precision and representativeness in addition to the processes of sampling, handling, storage, chemical laboratory analyses, data assessment and site performance, according to the goals of the study.
机译：由国家生态研究所开发的名为DATGEN的墨西哥城都市区（MCMA）排放清单包括有关五种标准污染物（O3，NOx，SOx，CO和PST）的信息。但是，该数据库还包含有关使用原材料和输出过程的行业的重要信息，这些行业可以与向大气排放的金属相关联。在1997年期间进行了酸沉积计划的采样活动。在MCMA的10个地点获得了干沉积样品。化学分析表明，其中包括铝（Al），铜（Cu），铁（Fe），锰（Mn），铅（Pb），锌（Zn）等金属的存在。根据时间间隔将这些金属分类为它们的浓度以重量％计。使用样品重量超过0.01％的元素的空间分布图完成了沉积通量（mg / d.m2）研究。结果表明这些金属在MCMA气氛中的分布。尽管某些元素的浓度很低，但它们仍可能对水生和陆地环境造成损害，对人体健康也有危害，并且铁和锰等金属也可作为SO2氧化的催化剂，SO2氧化是酸雨的前体。该研究先于湿法沉积中的金属研究和干法沉积中的金属其他研究。根据研究目标，除了采样，处理，存储，化学实验室分析，数据评估和现场性能之外，还进行了质量保证程序，以获取有关准确性，精度和代表性的数据。

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