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首页> 外文会议>Conference on First Jet Propulsion Laboratory in Situ Instruments Workshop Jun 11-13, 2002 Pasadena, California, USA >Miniaturized GC/MS instrumentation for in situ measurements: micro gas chromatography coupled with miniature quadrupole array and Paul ion trap mass spectrometers
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Miniaturized GC/MS instrumentation for in situ measurements: micro gas chromatography coupled with miniature quadrupole array and Paul ion trap mass spectrometers

机译：微型GC / MS仪器，用于原位测量：微型气相色谱仪与微型四极杆阵列和Paul离子阱质谱仪联用

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摘要

Miniaturized chemical instrumentation is needed for in situ measurements in planetary exploration and other spaceflight applications where factors such as reduction in payload requirements and enhanced robustness are important. In response to this need, we are continuing to develop miniaturized GC/MS instrumentation which combines chemical separations by gas chromatography (GC) with mass spectrometry (MS) to provide positive identification of chemical compounds in complex mixtures of gases, such as those found in the International Space Station's cabin atmosphere. Our design approach utilizes micro gas chromatography components coupled with either a miniature quadrupole mass spectrometer array (QMSA) or compact, high-resolution Paul ion trap. Key design issues include high sensitivity, good MS resolution (0.5 amu FWHM or better), low power, robustness, low GC flow rates to minimize vacuum-pumping requirements, and the use of a modular approach to adapt to different environments. Among the potential applications for such instrumentation are in situ detection of astrobiology signatures (using air sampling or ground-drilling techniques), planetary aeronomy, and monitoring of cabin air during long duration human flight.
机译：对于行星探测和其他航天应用中的原位测量，需要微型化的化学仪器，在这些应用中，诸如减少有效载荷要求和增强耐用性等因素非常重要。为了满足这一需求，我们正在继续开发小型化的GC / MS仪器，该仪器将气相色谱仪（GC）与质谱（MS）的化学分离相结合，以对复杂气体混合物中的化合物进行正向鉴定，例如国际空间站的机舱气氛。我们的设计方法是利用微型气相色谱仪组件与微型四极杆质谱仪阵列（QMSA）或紧凑的高分辨率Paul离子阱相连。关键的设计问题包括高灵敏度，良好的MS分辨率（0.5 amu FWHM或更高），低功耗，耐用性，低GC流速以最小化真空泵的要求，以及采用模块化方法来适应不同的环境。此类仪器的潜在应用包括天文生物学特征的原位检测（使用空气采样或地面钻探技术），行星空气动力学以及长时间人类飞行期间机舱空气的监视。

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