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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Hydrogen chloride-induced surface disordering on ice
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Hydrogen chloride-induced surface disordering on ice

机译：氯化氢诱导的冰上表面无序

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Characterizing the interaction of hydrogen chloride (HCl) with polar stratospheric cloud ice particles is essential for understanding the processes responsible for ozone depletion. We studied the interaction of gas-phase HCl with ice between 243 and 186 K by using (i) ellipsometry to monitor the ice surface and (ii) coated-wall flow tube experiments, both with chemical ionization mass spectrometry detection of the gas phase. We show that trace amounts of HCl induce formation of a disordered region, or quasi-liquid layer, at the ice surface at stratospheric temperatures. We also show that surface disordering enhances the chlorine activation reaction of HCI with chlorine nitrate (CIONO2) and also enhances acetic acid (CH3COOH) adsorption. These results impact our understanding of the chemistry and physics of ice particles in the atmosphere.
机译：表征氯化氢（HCl）与平流层极地云冰粒之间的相互作用对于理解造成臭氧消耗的过程至关重要。我们使用（i）椭圆光度法监测冰表面和（ii）涂层壁流管实验，以及气相的化学电离质谱检测，研究了243至186 K之间的HCl与气相HCl的相互作用。我们表明，在平流层温度下，痕量的HCl会在冰表面诱发无序区或准液体层的形成。我们还表明，表面无序增强了HCl与硝酸氯（CIONO2）的氯活化反应，也增强了乙酸（CH3COOH）的吸附。这些结果影响了我们对大气中冰粒化学和物理的理解。

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