Title

Online Monitoring of Nanoparticle Contamination in Reactive Gases

Abstract

Numerous manufacturing processes require extremely low levels of nanoparticulate contamination to ensure product quality. While modern filters efficiently remove nanoparticles, online monitoring of the cleanliness of possibly reactive process gases is frequently necessary for quality control purposes. For most manufacturing processes, product quality depends on the concentration of particles above a specific threshold size. This paper will describe how to design an online nanoparticle monitoring system (NMS) for reactive (and inert) process gases from commercially available components, and will discuss how to adapt this system to varying process requirements, such as particle threshold size, and type and pressure of process gas. This paper will also describe a method to determine experimentally the performance of an NMS to ensure quality control.

Department(s)

Chemistry

Second Department

Physics

Keywords and Phrases

Condensation Nucleus Counters (CNC); Nanoparticle Monitoring Systems (NMS); Pressure Reduction Devices; Reactive Gases; Transport Lines; Aerosols; Condition Monitoring; Contamination; Detectors; Gas Absorption; Online Systems; Optimization; Product Design; Quality Control; Nanostructured Materials

International Standard Serial Number (ISSN)

1098-4321

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2004 Institute of Environmental Sciences and Technology, All rights reserved.


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