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首页> 外文期刊>Environmental Science & Technology >Sterols and Anionic Surfactants in Urban Aerosol:Emissions from Wastewater Treatment Plants in Relation to Background Concentrations
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Sterols and Anionic Surfactants in Urban Aerosol:Emissions from Wastewater Treatment Plants in Relation to Background Concentrations

机译：城市气溶胶中的甾醇和阴离子表面活性剂：废水处理厂的排放与背景浓度的关系

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摘要

Aerosol particles that are emitted from aeration tanks of wastewater treatment plants (WWTPs) can be enriched with environmentally relevant wastewater constituents.In this study,aerosol particles were sampled simultaneously at the pre-aeration tank of a municipal WWTP and at two urban locations approximately 1 km away from the WWTP to evaluate the significance of these aerosol emissions.Moreover,aerosol particles were sampled at a small wastewater irrigation facility and at a rural site.In aerosol particles and wastewater,six sterols (cholesterol,coprostanol,campesterol,beta-sitosterol,stigmasterol,stigmastanol) and anionic surfactants (expressed in terms of methylene blue active substances,MBAS) were quantified.The results showed significantly higher concentrations of sterols and MBAS at the WWTP than at the urban locations.Atthe WWTP,average concentrations of cholesterol (848 +- 321 pg m~(-3)),coprostanol (1132 +-565 pg m~(-3)),and MBAS (132 +- 43 ng m~(-3)) in aerosol were approximately twice as high.This can be attributed to emissions from the treatment tank.Coprostanol,a unique tracer for wastewater,was detected only occasionally at the urban locations.The results of this study show that the aeration of wastewater is a continuously operating local source for organic compounds in aerosol.The wastewater irrigation facility was a minor source of aerosol-bound sterols (coprostanol,287 +- 218 pg m~(-3)) and anionic surfactants (64 +- 32 ng m~(-3)).Except for coprostanol,all compounds were also present in samples of rural aerosol.
机译：从废水处理厂（WWTP）的曝气池中排放的气溶胶颗粒可以富含与环境相关的废水成分。在这项研究中，同时在市政WWTP的曝气池和两个城市地点（约1个）同时采样了气溶胶颗粒距离污水处理厂约9公里，以评估这些气溶胶排放的重要性。此外，在小型废水灌溉设施和农村地区对气溶胶颗粒进行了采样。在气溶胶颗粒和废水中，有六种固醇（胆固醇，邻苯二酚，菜油甾醇，β-谷甾醇）定量测定了stigmasterol，stigmastanol和阴离子表面活性剂（以亚甲基蓝活性物质，MBAS表示）的结果。结果表明，污水处理厂中的固醇和MBAS的浓度明显高于城市地区。在污水处理厂中，胆固醇的平均浓度（气溶胶中的848 +-321 pg m〜（-3）），coprostanol（1132 + -565 pg m〜（-3））和MBAS（132 +-43 ng m〜（-3））为近似值高出两倍，这可以归因于处理池的排放。唯一在废水中发现的独特的示踪剂-萘甲酚在城市地区偶尔被检测到。废水灌溉设施中的一小部分是与气溶胶结合的固醇（coprostanol，287 +-218 pg m〜（-3））和阴离子表面活性剂（64 +-32 ng m〜（-3））。除了去甲前列腺素外，所有化合物还存在于农村气溶胶样品中。

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  • 来源
    《Environmental Science & Technology》 |2005年第12期|p.4391-4397|共7页
  • 作者

    MICHAEL RADKE;

  • 作者单位

    Department of Hydrology,University of Bayreuth,95440 Bayreuth,Germany;

  • 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 环境化学;
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