Rapid Analysis of the Size Distribution of Metal-Containing Aerosol.
| Autor: | Park JH; School of Health Sciences, Purdue University, Indiana., Mudunkotuwa IA; Department of Chemistry, University of Iowa, Iowa., Crawford KJ; Department of Occupational and Environmental Health, University of Iowa, Iowa., Anthony TR; Department of Occupational and Environmental Health, University of Iowa, Iowa., Grassian VH; Departments of Chemistry and Biochemistry and Nanoengineering, University of California San Diego, California., Peters TM; Department of Occupational and Environmental Health, University of Iowa, Iowa. |
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| Jazyk: | angličtina |
| Zdroj: | Aerosol science and technology : the journal of the American Association for Aerosol Research [Aerosol Sci Technol] 2017; Vol. 51 (1), pp. 108-115. Date of Electronic Publication: 2016 Oct 20. |
| DOI: | 10.1080/02786826.2016.1245406 |
| Abstrakt: | Conventional methods to measure the metallic content of particles by size are time consuming and expensive, requiring collection of particles with a cascade impactor and subsequent metals analysis by inductively coupled plasma mass spectrometry (ICP-MS). In this work, we describe a rapid way to measure the size distribution of metal-containing particles from 10 nm to 20 μm, using a nano micro-orifice uniform-deposit impactor (nano-MOUDI) to size-selective and collect particles that are then analyzed with a field portable X-ray fluorescence (FP-XRF) to determine metal composition and concentration. The nano-MOUDI was used to sample a stainless-steel aerosol produced by a spark discharge system. The particle-laden substrates were then analyzed directly with FP-XRF and then with ICP-MS. Results from FP-XRF were linearly correlated with results from ICP-MS (R 2 = 0.91 for Fe and R 2 = 0.84 for Cr). Although the FP-XRF was unable to detect Fe particles at mass per substrate loadings less than 2.5 μg effectively, it produced results similar to those using the ICP-MS at a mass per substrate loading greater than 2.5 μg. |
| Databáze: | MEDLINE |
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