FASTOF: Fully automated in-situ GC-TOF Observation of atmospheric trace gases

FASTOF：全自动原位 GC-TOF 大气痕量气体观测

基本信息

批准号：
193780636
负责人：
Professor Dr. Andreas Engel
金额：
--
依托单位：
Institut für Atmosphäre und Umwelt (IAU)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2011
资助国家：
德国
起止时间：
2010-12-31 至 2017-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/193780636?language=en
关键词：
FASTOF Fully automated situ GC

项目摘要

Halocarbon compounds play an essential role in atmospheric chemistry, in the depletion ofstratospheric ozone and in radiative forcing of the atmosphere. They are most commonlymeasured by gas chromatography coupled to quadrupole mass spectrometry. We propose todevelop a novel measurement system, in which the quadrupole mass spectrometer is replacedby a much more powerful time-of-flight mass spectrometer, which has recently becomeavailable in a form which is suited for field deployment. The main advantage of this newlyavailable mass spectrometer is that it achieves the sensitivity of a quadrupole massspectrometer which is tuned to a single mass, but in the same time provides information on allmasses (full scan mode). We suggest to fully automate this instrument in order to be able todeploy it at remote field sites. First atmospheric observations will already be possible at anearly stage of the instrument development, while fully automated measurement capability willbe available after the second project year.We suggest three scientific areas for the first measurements with this instrument, focussing onhalogenated hydrocarbons in the atmosphere: (i) measure brominated and iodinatedhalocarbons which may impact stratospheric ozone in their source region, the marineboundary layer, (ii) use the scanning capability of the instrument to search for new, so farunidentified halocarbons in the atmosphere and (iii) measure hydrofluorocarbons, which couldbecome much more important greenhouse gases in the future and use the scanning capabilitiesof the TOF mass spectrometer in order to create an air archive allowing to quantify so farunidentified species, even at a later stage.With the work proposed here we would like to establish the GC-TOF technique foratmospheric trace gas measurements, which will provide much more detailed information inthe future. Many further applications of this instrument in national and international projectsare foreseeable, e.g. for studies of non-CO2 greenhouse gases and ozone depleting chemicals,their atmospheric trends, sinks and sources, distributions, variabilities and their impact onchemistry and climate of the atmosphere.

盐碳化合物在大气化学，strat磷臭氧的耗竭和大气强迫中起着至关重要的作用。它们最常见的是通过与四极质质谱法耦合的气相色谱法。我们提出了一个新颖的测量系统，其中四极质谱仪被一个更强大的飞行时间质谱仪所取代，该质谱仪最近以适合现场部署的形式而变得更加有效。这个新可利用的质谱仪的主要优点是它实现了四极质量计的灵敏度，该质量计调谐到单个质量，但同时提供了有关Allmasses（完整扫描模式）的信息。我们建议将该仪器充分自动化，以便能够在远程野外站点上踩踏它。在仪器开发的敏锐阶段，将已经可以进行第一个大气观察，而第二个项目之后将获得完全自动化的测量能力。我们建议使用该仪器进行第一次测量的三个科学领域，集中于大气中的良好的氢化液能：（i）测量和iodinatedHalocarbons的素材，这些区域可能会影响他们在统计中的层次群，这些层是他们在II层中的层次群体，这些层是元素的一层。该工具在大气中寻找新的，远处固化的卤代孔的扫描能力和（iii）衡量的水力荧光碳纤维，这可以使未来更为重要的温室气体更重要，并使用TOF质谱仪的扫描能力并使用较远的阶段来量化，即使在此阶段量化，因此可以在此阶段进行量化。技术叉车痕量气体测量值，该测量将在未来提供更详细的信息。该工具在可预见的国家和国际项目中的许多进一步应用，例如为了研究非CO2温室气体和臭氧耗尽的化学物质，它们的大气趋势，水槽和来源，分布，变异性及其影响的影响及其大气的气候和气候。