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首页> 外文期刊>Environmental Science & Technology >Heterogeneous Chemistry of Alkylamines with Sulfuric Acid: Implications for Atmospheric Formation of Alkylaminium Sulfates
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Heterogeneous Chemistry of Alkylamines with Sulfuric Acid: Implications for Atmospheric Formation of Alkylaminium Sulfates

机译：烷基胺与硫酸的异相化学：对烷基硫酸铝在大气中的影响

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摘要

The heterogeneous interaction of alkylamines with sulfuric acid has been investigated to assess the role of amines in aerosol growth through the formation of alkylaminium sulfates. The kinetic experiments were conducted in a low-pressure fast flow reactor coupled to an ion drift-chemical ionization mass spectrometer (ID-CIMS). The measurements of heterogeneous uptake of methylamine, dimethylamine, and tnmethylamine were performed in the acidity range of 59-82 wt % H_2SO_4 and between 243 and 283 K. Irreversible reactive uptakes were observed for all three alkylamines, with comparable uptake coefficients (γ) in the range of 2.0 × 10~(-2) to 4.4 × 10~(-2). The measured γ value was slightly higher in more concentrated sulfuric acid and at lower temperatures. The results imply that the heterogeneous reactions of alkylamines contribute effectively to the growth of atmospheric acidic particles and, hence, secondary organic aerosol formation.
机译：已经研究了烷基胺与硫酸的异质相互作用，以评估胺通过形成烷基硫酸铵在气溶胶生长中的作用。动力学实验在与离子漂移化学电离质谱仪（ID-CIMS）耦合的低压快速流动反应器中进行。在59-82 wt％H_2SO_4的酸性范围内以及243和283 K之间进行了甲胺，二甲胺和叔甲基胺异质吸收的测量。观察到所有三种烷基胺的不可逆反应性吸收，在2.0×10〜（-2）到4.4×10〜（-2）的范围。在更浓的硫酸中和较低的温度下，测得的γ值略高。结果暗示烷基胺的异质反应有效地促进了大气酸性颗粒的生长，并因此促进了第二有机气溶胶的形成。

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  • 来源
    《Environmental Science & Technology》 |2010年第7期|p.2461-2465|共5页
  • 作者

    LIN WANG; VINITA LAL; ALEXEI F. KHALIZOV; RENYI ZHANG;

  • 作者单位

    Department of Atmospheric Sciences and Department of Chemistry, Texas ASM University, College Station, Texas 77843;

    Department of Atmospheric Sciences and Department of Chemistry, Texas ASM University, College Station, Texas 77843;

    Department of Atmospheric Sciences and Department of Chemistry, Texas ASM University, College Station, Texas 77843;

    Department of Atmospheric Sciences and Department of Chemistry, Texas ASM University, College Station, Texas 77843;

  • 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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