...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Reviews of environmental contamination and toxicology >Polycyclic aromatic hydrocarbons in the South American environment.
【24h】

Polycyclic aromatic hydrocarbons in the South American environment.

机译：南美环境中的多环芳烃。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Pollution of the environment with polycyclic aromatic hydrocarbons (PAHs) should be a global concern, especially in urbanized areas. In South American countries, where notable increase in urban populations has been observed in the past few years, reliable information about the pollution status of these urban environments is not always easily accessible, and therefore an effort to collect updated information is required. This review attempts to contribute by analyzing the existing information regarding environmental levels of PAHs in some South American countries. A regional trend for environmental PAH information is an uneven contribution, because some countries, such as Bolivia, Peru, Paraguay, and Ecuador, have reported no information at all in the scientific literature, reflecting to a certain extent the different patterns of economic, technical, and scientific development. PAH air monitoring is one of the areas that has received the most attention during the last few years, mainly in Brazil, Chile,and Argentina, where data represent a few geographical areas within the region. PAH levels in air from some urban areas in Argentina, Brazil, and Chile, considered moderate to high (100-1000ng/m3), are probably among the highest values reported in the open literature. Urbanization, vehicle pollution, and wood fires are the principal contributors to the high reported levels. In more temperate areas, a clear distinction is observed between summer and winter levels. PAH monitoring in soils is very limited within the region, with few data available, and most information indicates widespread pollution. In Brazil, values for many representative ecosystems were found. In Chile, data from forestry and agricultural areas indicate in general low concentrations, in spite of a relatively high detection frequency. Pollution levels in soils are highly dependent on their closeness to PAH sources and certain cultural practices (agricultural burnings, forest fires, etc.). Water PAH levels are rarely reported in the scientificliterature for South American countries.
机译：多环芳烃（PAHs）对环境的污染应该是全球关注的问题，尤其是在城市地区。在过去几年中观察到城市人口显着增加的南美国家中，有关这些城市环境污染状况的可靠信息并不总是容易获得，因此需要努力收集最新信息。这篇综述试图通过分析一些南美国家有关PAHs环境水平的现有信息来做出贡献。环境多环芳烃信息的区域趋势贡献不均，因为玻利维亚，秘鲁，巴拉圭和厄瓜多尔等一些国家在科学文献中根本没有报告任何信息，在一定程度上反映了经济，技术和技术的不同模式。 ，科学发展。 PAH空气监测是最近几年最受关注的领域之一，主要集中在巴西，智利和阿根廷，这些数据代表了该地区的一些地理区域。公开文献中报道的阿根廷，巴西和智利某些城市地区空气中的PAH水平被认为是中度到较高（100-1000ng / m3）。城市化，车辆污染和柴火是造成高报导水平的主要原因。在温带地区，夏季和冬季之间存在明显的区别。在该区域内，土壤中的PAH监测非常有限，几乎没有可用数据，而且大多数信息表明污染广泛。在巴西，发现了许多具有代表性的生态系统的价值。在智利，尽管检出频率较高，但林业和农业地区的数据显示总体浓度较低。土壤中的污染水平高度依赖于它们与PAH来源的接近程度以及某些文化习俗（农业焚烧，森林大火等）。南美国家的科学文献中很少报道水的PAH水平。

著录项

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