Experimental Evaluation of a Compact Electrostatic Nanoparticle Samp
A new compact aerosol sampler for particle SEM/TEM analysis was evaluated. The sampler is based on electrostatic deposition. The sampler consists of two key components: aerosol charging and particle deposition chambers. In this study the performance optimization of the sampler was first carried out by varying the charger voltage, and flow rates of aerosol and ion carry flows. The sampler’s performance when operated at the identified operational condition was then evaluated. Collection efficiency of the sampler for solid (potassium chloride), liquid (oleic acid) and PSL particles in the size range from 40 to 480 nm were measured. Fluorescent particles in the sizes ranging from 80 to 480 nm were also used to assess the particle deposition distribution in the sampler via the fluorescence technique. Our study shows that the collection efficiency was 65％- 76％ and 88％-96％ for solid and liquid particles, respectively. The collection efficiency for PSL particles is in par with that for liquid particles. Fluorescent study further showed that 35％-67％ of liquid particles were collected on the side wall of particle collection stage installed in the sampler.
Electrostatic nanoparticle sampler Particle collection efficiency SEM/TEM particle analysis
He Jing Qisheng Ou Da-Ren Chen
Washington University in St. Louis,St. Louis,Missouri 63130,United States
国际会议
西安
英文
161-166
2011-08-17（万方平台首次上网日期，不代表论文的发表时间）