首页> 外文期刊>Environmental Pollution >Geochemistry and carbon isotopic ratio for assessment of PM_(10) composition, source and seasonal trends in urban environment
【24h】

Geochemistry and carbon isotopic ratio for assessment of PM_(10) composition, source and seasonal trends in urban environment

机译:地球化学和碳同位素比用于评估城市环境中PM_(10)的组成,来源和季节趋势

获取原文
获取原文并翻译 | 示例
       

摘要

Investigating the nature of PM10 is crucial to differentiate sources and their relative contributions. In this study we compared the levels, and the chemical and mineralogical properties of PM10 particles sampled in different seasons at monitoring stations representative of urban background, urban traffic and suburban traffic areas of Naples city. The aims were to relate the PM10 load and characteristics to the location of the monitoring stations, to investigate the different sources contributing to PM10 and to highlight PM10 seasonal variability. Bulk analyses of chemical species in the PM10 fraction included total carbon and nitrogen, delta C-13 and other 20 elements. Both natural and anthropogenic sources were found to contribute to the exceedances of the EU PM10 limit values. The natural contribution was mainly related to marine aerosols and soil dust, as highlighted by X-ray diffractometry and SEM-EDS microscopy. The percentage of total carbon suggested a higher contribution of biogenic components to PM10 in spring. However, this result was not supported by the delta C-13 values which were seasonally homogeneous and not sufficient to extract single emission sources. No significant differences, in terms of PM10 load and chemistry, were observed between monitoring stations with different locations, suggesting a homogeneous distribution of PM10 on the studied area in all seasons. The anthropogenic contribution to PM10 seemed to dominate in all sites and seasons with vehicular traffic acting as a main source mostly by generation of non-exhaust emissions Our findings reinforce the need to focus more on the analysis of PM10 in terms of quality than of load, to reconsider the criteria for the classification and the spatial distribution of the monitoring stations within urban and suburban areas, with a special attention to the background location, and to emphasize all the policies promoting sustainable mobility and reduction of both exhaust and not exhaust traffic-related emissions. (C) 2018 Elsevier Ltd. All rights reserved.
机译:调查PM10的性质对于区分来源及其相对贡献至关重要。在这项研究中,我们比较了代表那不勒斯市的城市背景,城市交通和郊区交通区域的监测站在不同季节采样的PM10颗粒的水平以及化学和矿物学性质。目的是将PM10的负荷和特性与监测站的位置联系起来,调查造成PM10的不同来源,并突出PM10的季节性变化。 PM10馏分中的化学物质的批量分析包括总碳和氮,δC-13和其他20种元素。发现自然和人为来源均超过了欧盟PM10限值。 X射线衍射和SEM-EDS显微镜显示,自然贡献主要与海洋气溶胶和土壤粉尘有关。春季总碳的百分比表明生物成分对PM10的贡献更大。但是,该结果不受季节性均一且不足以提取单一排放源的C-13增量值的支持。在不同位置的监测站之间未观察到PM10负载和化学性质的显着差异,这表明在所有季节中,PM10在研究区域的均匀分布。在所有地点和季节,人为因素对PM10的贡献似乎都占主导地位,而车辆交通主要是通过产生非废气排放而成为主要来源。我们的发现强调,需要更多地关注PM10的质量而非负荷分析,重新考虑城市和郊区内监测站的分类和空间分布标准,特别注意背景位置,并强调所有促进可持续交通和减少与排气无关的交通政策排放。 (C)2018 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Environmental Pollution》 |2018年第8期|590-598|共9页
  • 作者单位

    Univ Naples Federico II, Dipartimento Agr, Via Univ 100, I-80055 Portici, NA, Italy;

    Univ Naples Federico II, Dipartimento Biol, Via Cinthia 4, I-80126 Naples, Italy;

    Univ Naples Federico II, Dipartimento Agr, Via Univ 100, I-80055 Portici, NA, Italy;

    Univ Naples Federico II, Dipartimento Agr, Via Univ 100, I-80055 Portici, NA, Italy;

    Univ Naples Federico II, Dipartimento Biol, Via Cinthia 4, I-80126 Naples, Italy;

    Univ Naples Federico II, Dipartimento Biol, Via Cinthia 4, I-80126 Naples, Italy;

    Univ Naples Federico II, Dipartimento Agr, Via Univ 100, I-80055 Portici, NA, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Air pollution; Trace elements; Isotopic composition; Traffic; Marine aerosols; Soil dust;

    机译:空气污染;微量元素;同位素组成;交通流量;海洋气溶胶;土壤粉尘;
  • 入库时间 2022-08-17 13:25:52

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号