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Particulate matter geochemistry of a highly industrialized region in the Caribbean: Basis for future toxicological studies
Geoscience Frontiers ( IF 8.9 ) Pub Date : 2020-12-17 , DOI: 10.1016/j.gsf.2020.11.012
Luis F.O. Silva , Ismael L. Schneider , Paulo Artaxo , Yuleisy Núñez-Blanco , Diana Pinto , Érico M.M. Flores , Leandro Gómez-Plata , Omar Ramírez , Guilherme L. Dotto

Air pollution has become an important issue, especially in Caribbean urban areas, and, particulate matter (PM) emitted by different natural and anthropogenic sources causes environmental and health issues. In this work, we studied the concentrations of PM10 and PM2.5 sources in an industrial and port urban area in the Caribbean region of Colombia. PM samples were collected within 48-h periods between April and October 2018 by using a Partisol 2000i-D sampler. Elemental geochemical characterization was performed by X-ray fluorescence (XRF) analysis. Further, ionic species and black carbon (BC) were quantified by ion chromatography and reflectance spectroscopy, respectively. Using the Positive Matrix Factorization (PMF) receptor model, the contributions of PM sources were quantified. The average concentration of PM10 was 46.6 ± 16.2 μg/m3, with high concentrations of Cl and Ca. For PM2.5, the average concentration was 12.0 ± 3.2 μg/m3, and the most abundant components were BC, S, and Cl. The receptor model identified five sources for PM10 and PM2.5. For both fractions, the contributions of marine sea spray, re-suspended soil, and vehicular traffic were observed. In addition, PM2.5 included two mixed sources were found to be fuel oil combustion with fertilizer industry emissions, and secondary aerosol sources with building construction emissions. Further, PM10 was found to also include building construction emissions with re-suspended soil, and metallurgical industry emissions. These obtained geochemical atmospheric results are important for the implementation of strategies for the continuous improvement of the air quality of the Caribbean region.



中文翻译:

加勒比高度工业化地区的颗粒物质地球化学:未来毒理学研究的基础

空气污染已成为一个重要问题,尤其是在加勒比城市地区,不同自然和人为来源排放的颗粒物 (PM) 会导致环境和健康问题。在这项工作中,我们研究了 PM 10和 PM 2.5的浓度哥伦比亚加勒比地区的工业和港口城市地区的来源。使用 Partisol 2000i-D 采样器在 2018 年 4 月至 10 月的 48 小时内收集 PM 样本。通过 X 射线荧光 (XRF) 分析进行元素地球化学表征。此外,离子物质和黑碳 (BC) 分别通过离子色谱法和反射光谱法进行量化。使用正矩阵分解 (PMF) 受体模型,量化 PM 源的贡献。PM 10的平均浓度为 46.6 ± 16.2 μg/m 3,其中 Cl 和 Ca 浓度较高。PM 2.5的平均浓度为 12.0 ± 3.2 μg/m 3,最丰富的成分是 BC、S 和 Cl。受体模型确定了 PM 10和 PM 2.5 的五个来源。对于这两个部分,观察到海洋海浪、重新悬浮的土壤和车辆交通的贡献。此外,PM 2.5包括两个混合来源,被发现是燃料油燃烧和化肥工业排放,以及二次气溶胶来源和建筑施工排放。此外,还发现PM 10还包括重新悬浮土壤的建筑施工排放和冶金工业排放。这些获得的地球化学大气结果对于实施持续改善加勒比地区空气质量的战略非常重要。

更新日期:2020-12-17
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