Oxidative stress can be used to evaluate not only adverse health effects but also adverse ecological effects, but limited research uses eco-toxicological assay to assess the risks posed by particle matters to non-human biomes. One important reason might be that the concentration of toxic components of atmospheric particles is far below the high detection limit of eco-toxic measurement. To solve the rapid detection problem, we extended a versatile aerosol concentration enrichment system (VACES) for ecotoxicity aerosol measurement and firstly used VACES to provide a comparison of ecotoxicity between non-concentrated and concentrated aerosols in ambient air. In this study, the total concentration (number or mass), the concentration of chemical components and the ecotoxicity were all increased by approximately 7 to 10 times in VACES, making the detection of ecotoxicity above the baseline. The comparison of ecotoxicity data and PM_2.5 concentration showed that low concentration was not matched with ecotoxicity, although high concentration corresponded to higher ecotoxicity. In addition, the higher saturation temperature in VACES caused a loss of particulate matter, of which nitrate accounted for about 18 %.

中文翻译：

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使用多功能气溶胶浓度富集系统（VACES）对大气颗粒的生态毒性进行半连续研究：开发和现场表征

氧化应激不仅可以用于评估不良健康影响，还可以评估不良的生态影响，但是有限的研究使用生态毒理学分析方法来评估颗粒物质对非人类生物群落构成的风险。一个重要的原因可能是大气颗粒中有毒成分的浓度远低于生态毒性测量的高检测极限。为了解决快速检测问题，我们扩展了通用的气溶胶浓度富集系统（VACES）用于生态毒性气溶胶测量，并首先使用VACES来比较环境空气中非浓缩气溶胶和浓缩气溶胶之间的生态毒性。在这项研究中，VACES中的总浓度（数量或质量），化学成分的浓度和生态毒性都增加了约7至10倍，使生态毒性的检测高于基线。生态毒性数据与PM的比较_2.5 浓度表明低浓度与生态毒性不匹配，尽管高浓度对应较高的生态毒性。此外，VACES中较高的饱和温度会导致颗粒物损失，其中硝酸盐约占18％。