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首页> 外文期刊>Physical Review & Research International >Elemental Characterization and Source Identification of Fine Particulate Matter (PM2.5) in an Industrial Area of Lagos State, Nigeria
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Elemental Characterization and Source Identification of Fine Particulate Matter (PM2.5) in an Industrial Area of Lagos State, Nigeria

机译：尼日利亚拉各斯州工业区的细颗粒物（PM2.5）的元素表征和来源鉴定

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Fine particles (PM2.5) are mainly generated by combustion processes including emissions from motor vehicles, combustion of fossil fuel for power generation and large industrial processes such as ore and metal smelting. They may also include natural emissions such as fine windblown soils, sea spray and smoke from biomass burning. Based on the field study conducted, the concentrations of PM2.5 at the different locations vary with respect to anthropogenic activities. The PM2.5 levels obtained ranged from 14.00 to 32.67 μg/m3 during wet season and 18.67 to 34.67 μg/m3 during dry season. Trace elements especially heavy metals are significant components of PM2.5 in industrial environments. The heavy metals are of particular concern due to their persistence in the environmental media and their human toxicity. The particulate matter concentration was obtained using Casella cel-712 microdust pro-real time dust monitor and flame atomic absorption spectrophotometer was used to determine the elemental content. The Enrichment Factor (EF) analysis showed very high enrichment for the elements; Pb, Cd, Cr, Cu, Ni, Na, K, Mg, and Ca in the fine fraction (PM2.5). The Principal Component Analysis explained three common contributing sources of fine particulates (PM2.5) such as entrained soil, sea salt and combustion. Spatial variation was performed and mean concentration of some of the elements in the various locations showed significant difference at P
机译：细颗粒物（PM2.5）主要由燃烧过程产生，这些燃烧过程包括机动车辆的排放，发电用化石燃料的燃烧以及矿石和金属冶炼等大型工业过程。它们还可能包括自然排放物，例如细风沙土，海浪和生物质燃烧产生的烟雾。根据进行的现场研究，不同地点的PM2.5浓度因人为活动而异。雨季期间获得的PM2.5水平范围为14.00至32.67μg/ m3，旱季期间为18.67至34.67μg/ m3。微量元素（尤其是重金属）是工业环境中PM2.5的重要组成部分。由于重金属在环境介质中的持久性及其对人体的毒性，因此特别令人关注。使用Casella cel-712微尘实时粉尘监测仪获得颗粒物浓度，并使用火焰原子吸收分光光度计测定元素含量。富集因子（EF）分析显示元素的富集程度很高;细小部分（PM2.5）中的Pb，Cd，Cr，Cu，Ni，Na，K，Mg和Ca主成分分析解释了三种常见的细颗粒物（PM2.5）来源，例如夹带的土壤，海盐和燃烧物。进行了空间变化，并且在P处各个位置的某些元素的平均浓度显示出显着差异

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