A new compact aerosol concentrator for use in conjunction with low flow-rate continuous aerosol instrumentation
A new compact aerosol concentrator for use in conjunction with low flow-rate continuous aerosol instrumentation
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DOI：
10.1016/j.jaerosci.2004.11.015
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发表时间：
2005-08-01
影响因子：
4.5
通讯作者：
Sioutas, C
中科院分区：
文献类型：
--
作者：
Geller, MD;Biswas, S;Sioutas, C
目前可用的多功能气溶胶浓度浓缩系统 (VACES) 已被证明可用于为人类和动物暴露提供较高水平的环境颗粒物，以及收集水溶液中的颗粒用于体外研究。先前的研究表明，此类系统不会显着改变颗粒的物理或化学性质。当前的 VACES 配置消耗大量电力用于泵送和冷却，并且需要专家操作员参与操作。 VACES 最近的一项应用是向连续粒子质谱仪提供浓缩气溶胶流，以提高质谱仪的命中率或灵敏度。这些仪器通常需要较低的进气流量（
Currently available versatile aerosol concentration enrichment systems (VACES) have proven useful for providing elevated levels of ambient particulate matter to human and animal exposures, as well as for the collection of particles in aqueous solutions for in vitro studies. Previous studies have demonstrated that such systems do not significantly alter the physical or chemical properties of the particles. The current VACES configuration consumes significant electrical power for pumping and cooling, and requires attended operation by expert operators. A recent application of the VACES has been to provide a concentrated aerosol stream to continuous particle mass spectrometers in order to increase the spectrometer's hit rate or sensitivity. These instruments usually require low intake flow rates (