DEVELOPMENT OF A PORTABLE, LOW POWER PARTICLE MONITOR BASED UPON A SMOKE DETECTOR IONIZATION CELL

Jonathan Thompson, Hunter Towns, Vince Wilde

Research output: Other contribution

Abstract

An inexpensive, and potentially portable particulate matter (PM) sensor was developed from an ionization chamber obtained from a household smoke detector. The devices performance was experimentally determined within a laboratory setting to assess the suitability of the technology for personal exposure monitoring. The sensor displayed a minimum limit of detection of 0.226 mg/m3 when 2001 measurements were averaged over the course of 2001 seconds, along with an average response time of 150 seconds. As the limit of detection is >10 times larger than PM mass loadings at most locations, the level of performance observed suggests the sensor will not allow routine PM exposure monitoring in most cities. However, the sensor may find use during high exposure periods or for workplace exposure monitoring. This was confirmed through monitoring PM levels during fry cooking within a dwelling. The sensor produced a large measureable response to the particulate matter created during cooking,
Original languageEnglish
PublisherTexas Tech Libraries - ThinkTech Repository: Faculty Research
StatePublished - Dec 13 2017

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