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Thesis
Evaluation of the DiSCmini personal aerosol monitor for submicrometer sodium chloride and metal aerosols
University of Iowa
Master of Science (MS), University of Iowa
Spring 2013
DOI: 10.17077/etd.49xtevca
Abstract
<p>This work evaluated the robust, lightweight DiSCmini (DM) aerosol monitor for its ability to measure the concentration and mean diameter of submicrometer aerosols. Tests were conducted with monodispersed and polydispersed aerosols composed of two particle types (sodium chloride, NaCl, and spark generated metal particles, which simulate particles found in welding fume) at three different steady-state concentration ranges (Low, <103; Medium, 103-104; and High, >104 particles/cm3). Particle number concentration, lung deposited surface area (LDSA) concentration, and mean size measured with the DM were compared to those measured with reference instruments, a scanning mobility particle sizer (SMPS) and a handheld condensation particle counter (CPC). Particle number concentrations measured with the DM were within 16% of those measured by the CPC for polydispersed aerosols. Poorer agreement was observed for monodispersed aerosols (±35% for most tests and +101% for 300-nm NaCl). LDSA concentrations measured by the DM were 96% to 155% of those estimated with the SMPS. The geometric mean diameters measured with the DM were within 30% of those measured with the SMPS for monodispersed aerosols and within 25% for polydispersed aerosols (except for the case when the aerosol contained a substantial number of particles larger than 300 nm). The accuracy of the DM is reasonable for particles smaller than 300 nm but caution should be exercised when particles larger than 300 nm are present.</p>
Details
- Title: Subtitle
- Evaluation of the DiSCmini personal aerosol monitor for submicrometer sodium chloride and metal aerosols
- Creators
- Jessica Breyan Mills - University of Iowa
- Contributors
- Thomas M. Peters (Advisor)Theresa R. Anthony (Committee Member)Nathan B. Fethke (Committee Member)
- Resource Type
- Thesis
- Degree Awarded
- Master of Science (MS), University of Iowa
- Degree in
- Occupational and Environmental Health
- Date degree season
- Spring 2013
- Publisher
- University of Iowa
- DOI
- 10.17077/etd.49xtevca
- Number of pages
- vii, 43 pages
- Copyright
- Copyright 2013 Jessica Breyan Mills
- Language
- English
- Description illustrations
- illustrations
- Description bibliographic
- Includes bibliographical references (pages 39-43).
- Academic Unit
- Occupational and Environmental Health
- Record Identifier
- 9983777218502771
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