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首页> 外文期刊>Environmental Science & Technology >Transition Metal Associations with Primary Biological Particles in Sea Spray Aerosol Generated in a Wave Channel
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Transition Metal Associations with Primary Biological Particles in Sea Spray Aerosol Generated in a Wave Channel

机译:通道中产生的海水喷雾气溶胶中过渡金属与主要生物颗粒的缔合

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摘要

In the ocean, breaking waves generate air bubbles which burst at the surface and eject sea spray aerosol (SSA), consisting of sea salt, biogenic organic species, and primary biological aerosol particles (PBAP). Our overall understanding of atmospheric biological particles of marine origin remains poor. Here, we perform a control experiment, using an aerosol time-of-flight mass spectrometer to measure the mass spectral signatures of individual particles generated by bubbling a salt solution before and after addition of heterotrophic marine bacteria. Upon addition of bacteria, an immediate increase occurs in the fraction of individual particle mass spectra containing magnesium, organic nitrogen, and phosphate marker ions. These biological signatures are consistent with 21% of the supermicrometer SSA particles generated in a previous study using breaking waves in an ocean-atmosphere wave channel. Interestingly, the wave flume mass spectral signatures also contain metal ions including silver, iron, and chromium The nascent SSA bioparticles produced in the wave channel are hypothesized to be as follows: (1) whole or fragmented bacterial cells which bioaccumulated metals and/or (2) bacteria-derived colloids or biofilms which adhered to the metals This study highlights the potential for transition metals, in combination with specific biomarkers, to serve as unique indicators for the presence of marine PBAP, especially in metal-impacted coastal regions.
机译:在海洋中,碎波产生气泡,气泡在表面破裂并喷出由海盐,生物有机物种和主要生物气溶胶颗粒(PBAP)组成的海喷雾气溶胶(SSA)。我们对海洋来源的大气生物颗粒的总体了解仍然很差。在这里,我们使用气溶胶飞行时间质谱仪进行了一个对照实验,以测量在添加异养性海洋细菌之前和之后通过将盐溶液鼓泡而生成的单个颗粒的质谱特征。加入细菌后,包含镁,有机氮和磷酸盐标记离子的单个颗粒质谱的比例会立即增加。这些生物学特征与先前研究中使用海洋-大气波通道中的碎波产生的超微米SSA颗粒的21%一致。有趣的是,波槽质谱信号特征还包含金属离子,包括银,铁和铬。在波通道中产生的新生SSA生物颗粒的假设如下:(1)完整或碎片化的细菌细胞,它们会生物积累金属和/或( 2)附着在金属上的细菌胶体或生物膜这项研究强调了过渡金属与特定生物标记物结合使用的潜力,可以作为海洋PBAP存在的独特指标,尤其是在受金属影响的沿海地区。

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  • 来源
    《Environmental Science & Technology》 |2014年第2期|1324-1333|共10页
  • 作者单位

    Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, 92093,Department of Chemistry, Millikin University, Decatur, Illinois, 62522;

    Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, 92093;

    Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California, 92093;

    Department of Chemistry, University of Iowa, Iowa City, Iowa, 52242,Department of Environmental Health Sciences, University of Michigan, Ann Arbor, Michigan, 48109;

    Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, 92093;

    Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, 92093,Institute for Energy and Climate: Troposphere (IEK-8), Forschungszentrum Juelich, Juelich, D-52428, Germany;

    Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California, 92093;

    Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, 92093;

    Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, 92093;

    Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, 92093;

    Department of Chemistry, University of Iowa, Iowa City, Iowa, 52242;

    Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California, 92093;

    Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, 92093;

    Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, 92093,Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California, 92093;

  • 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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  • 正文语种 eng
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