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首页> 外文期刊>Environmental Science & Technology >Pollution-Induced Community Tolerance To Diagnose Hazardous Chemicals in Multiple Contaminated Aquatic Systems
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Pollution-Induced Community Tolerance To Diagnose Hazardous Chemicals in Multiple Contaminated Aquatic Systems

机译：污染引起的社区耐受性以诊断多种被污染水生系统中的有害化学物质

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摘要

Aquatic ecosystems are often contaminated with large numbers of chemicals, which cannot be sufficiently addressed by chemical target analyses. Effect-directed analysis (EDA) enables the identification of toxicants in complex contaminated environmental samples. This study suggests pollution-induced community tolerance (PICT) as a confirmation tool for EDA to identify contaminants which actually impact on local communities. The effects of three phytotoxic compounds local periphyton communities, cultivated at a reference (R-site) and a polluted site (P-site), were assessed to confirm the findings of a former EDA study on sediments. The sensitivities of R- and P-communities to prometryn, tributyltin (TBT) and N-phenyi-2-naphthylamine (PNA) were quantified in short-term toxicity tests and exposure concentrations were determined Prometryn and PNA concentrations were significantly higher at the P-site, whereas TBT concentrations were in the same range at both sites. Periphyton communities differed in biomass, but algal class composition and diatom diversity were similar. Community tolerance of P-communities was significantly enhanced for prometryn, but not for PNA and TBT, confirming site-specific effects on local periphyton for prometryn only. Thus, PICT enables in situ effect confirmation of phytotoxic compounds at the community level and seems to be suitable to support confirmation and enhance ecological realism of EDA.
机译：水生生态系统经常被大量化学物质污染，化学目标分析无法充分解决这些问题。效果导向分析（EDA）可以鉴定复杂污染的环境样品中的有毒物质。这项研究表明，污染诱发的社区容忍度（PICT）可作为EDA识别实际影响当地社区的污染物的确认工具。评估了三个植物毒性化合物在参考点（R部位）和污染部位（P部位）上种植的本地植物群落周围的影响，以确认以前的EDA研究对沉积物的发现。在短期毒性试验中，定量了R和P社区对Prometricn，三丁基锡（TBT）和N-苯基-2-萘胺（PNA）的敏感性，并确定了暴露于Prometricn和PNA的浓度-位点，而在两个位点的TBT浓度在相同范围内。附生植物群落的生物量不同，但藻类组成和硅藻多样性相似。 P前体对P族的社区耐受力显着增强，但对PNA和TBT则没有显着提高，这证实了仅对P前体对局部附生植物的位点特异性影响。因此，PICT能够在社区一级对植物毒性化合物进行原位确认，并且似乎适合于支持确认和增强EDA的生态现实性。

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  • 来源
    《Environmental Science & Technology》 |2015年第16期|10048-10056|共9页
  • 作者

    Stefanie Rotter; Roman Gunold; Sibylle Mothes; Albrecht Paschke; Werner Brack; Rolf Altenburger; Mechthild Schmitt-Jansen;

  • 作者单位

    Department Bioanalytical Ecotoxicology,Helmholtz-Centre for Environmental Research - UFZ, Permoserstrasse 15, 04318 Leipzig, Germany;

    Department of Ecological Chemistry, Helmholtz-Centre for Environmental Research - UFZ, Permoserstrasse 15, 04318 Leipzig, Germany;

    Department of Analytical Chemistry, Helmholtz-Centre for Environmental Research - UFZ, Permoserstrasse 15, 04318 Leipzig, Germany;

    Department of Ecological Chemistry, Helmholtz-Centre for Environmental Research - UFZ, Permoserstrasse 15, 04318 Leipzig, Germany;

    Department of Effect-Directed Analysis, Helmholtz-Centre for Environmental Research - UFZ, Permoserstrasse 15, 04318 Leipzig, Germany;

    Department Bioanalytical Ecotoxicology,Helmholtz-Centre for Environmental Research - UFZ, Permoserstrasse 15, 04318 Leipzig, Germany;

    Department Bioanalytical Ecotoxicology,Helmholtz-Centre for Environmental Research - UFZ, Permoserstrasse 15, 04318 Leipzig, 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);
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