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Revisiting the size selective performance of EPA's high-volume total suspended particulate matter (Hi-Vol TSP) sampler
| Content Provider | Scilit |
|---|---|
| Author | Krug, Jonathan D. Dart, Andrew Witherspoon, Carlton L. Gilberry, Jerome Malloy, Quentin Kaushik, Surender Vanderpool, Robert W. |
| Copyright Year | 2017 |
| Description | Under the National Ambient Air Quality Standard (NAAQS) for airborne lead, measurements are conducted by means of a high-volume total suspended particulate matter (Hi-Vol TSP) sampler. In the decade between 1973 and 1983, there were 12 publications that explored the sampling characteristics and effectiveness of the Hi-Vol TSP, yet there persists uncertainty regarding its performance. This article presents an overview of the existing literature on the performance of the Hi-Vol TSP, and identifies the reported sampler effectiveness with respect to four factors: particle size (reported effectiveness of 7%–100%), wind speed (−36% to 100%), sampler orientation (7%–100%), and operational state (107%–140%). Effectiveness of the Hi-Vol TSP was evaluated with a solid, polydisperse aerosol in a controlled wind tunnel setting. Isokinetic samplers were deployed alongside the Hi-Vol TSP to investigate three wind speeds (2, 8, and 24 km $h^{−1}$), three sampler orientations (0°, 45°, 90°), and two operational states (on, off) for aerosols with aerodynamic diameters from 5 to 35 µm. Results indicate that particle diameter was the largest determining factor of effectiveness followed by wind speed. Orientation of the sampler did not have a significant effect at 2 and 8 km $h^{−1}$ but did at 24 km $h^{−1}$. In a passive state, the Hi-Vol TSP was collected between 1% and 7% of available aerosol depending on particle size and wind speed. Results of this research do not invalidate results of previous studies but rather contribute to our overall understanding of the Hi-Vol TSP's size-selective performance. While results generally agreed with previous studies, the Hi-Vol TSP was found to exhibit less dependence on these four factors than previously reported. © 2017 American Association for Aerosol Research |
| Related Links | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7001320/pdf |
| Ending Page | 878 |
| Page Count | 11 |
| Starting Page | 868 |
| ISSN | 02786826 |
| e-ISSN | 15217388 |
| DOI | 10.1080/02786826.2017.1316358 |
| Journal | Aerosol Science and Technology |
| Issue Number | 7 |
| Volume Number | 51 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2017-07-03 |
| Access Restriction | Open |
| Subject Keyword | Journal: Aerosol Science and Technology Atmospheric Sciences Orientation Sampler Size Wind Speed Vol Tsp |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Pollution Materials Science |
