Deposition of carbon nanotubes in commonly used sample filter media
There is no single standard technique or methodology to characterize the size, structure, number, and chemical composition of airborne carbon nanotubes. Existing analytical instruments and analytical techniques for evaluating nanoparticle concentrations cannot simultaneously provide morphology, sta...
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| Language: | English |
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GJESM Publisher
2015-07-01
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| Series: | Global Journal of Environmental Science and Management |
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| Online Access: | http://www.gjesm.net/pdf_12729_ebf05883284b1e02a889c1c6d01af17d.html |
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| author | B.D. Smith S.B.H. Bach |
| author_facet | B.D. Smith S.B.H. Bach |
| author_sort | B.D. Smith |
| collection | DOAJ |
| description | There is no single standard technique or methodology to characterize the size, structure, number, and chemical composition of airborne carbon nanotubes. Existing analytical instruments and analytical techniques for evaluating nanoparticle concentrations cannot simultaneously provide morphology, state of agglomeration, surface area, mass, size distribution and chemical composition data critical to making occupational health assessments. This research utilized scanning electron microscopy and thermogravimetric analysis to assess the morphology and mass of carbon nanotubes collected using various commercial sample filters. It illustrated carbon nanotube agglomeration, deposition and distribution in commonly used sample filter media. It also illustrated that a sufficient mass for carbon nanotube analysis by thermogravimetric analysis is uncommon under most current research and production uses of carbon nanotubes. Individual carbon nanotubes were found to readily agglomerate with diameters ranging from 1 – 63 µm. They were collected at the face of or within the filter. They were not evenly distributed across the face of the filters. |
| format | Article |
| id | doaj-art-bfc6eae20d374f89a87960d0baf2c6f2 |
| institution | Kabale University |
| issn | 2383-3572 2383-3866 |
| language | English |
| publishDate | 2015-07-01 |
| publisher | GJESM Publisher |
| record_format | Article |
| series | Global Journal of Environmental Science and Management |
| spelling | doaj-art-bfc6eae20d374f89a87960d0baf2c6f22025-02-02T01:52:07ZengGJESM PublisherGlobal Journal of Environmental Science and Management2383-35722383-38662015-07-011318919812729Deposition of carbon nanotubes in commonly used sample filter mediaB.D. Smith0S.B.H. Bach1Department of Civil Engineering, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, USADepartment of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249, USAThere is no single standard technique or methodology to characterize the size, structure, number, and chemical composition of airborne carbon nanotubes. Existing analytical instruments and analytical techniques for evaluating nanoparticle concentrations cannot simultaneously provide morphology, state of agglomeration, surface area, mass, size distribution and chemical composition data critical to making occupational health assessments. This research utilized scanning electron microscopy and thermogravimetric analysis to assess the morphology and mass of carbon nanotubes collected using various commercial sample filters. It illustrated carbon nanotube agglomeration, deposition and distribution in commonly used sample filter media. It also illustrated that a sufficient mass for carbon nanotube analysis by thermogravimetric analysis is uncommon under most current research and production uses of carbon nanotubes. Individual carbon nanotubes were found to readily agglomerate with diameters ranging from 1 – 63 µm. They were collected at the face of or within the filter. They were not evenly distributed across the face of the filters.http://www.gjesm.net/pdf_12729_ebf05883284b1e02a889c1c6d01af17d.htmlAgglomeratesCarbon nanotubes (CNTs)Filter depositionParticulate sample filtersScanning electron microscopy (SEM), Thermogravimetric analysis (TGA) |
| spellingShingle | B.D. Smith S.B.H. Bach Deposition of carbon nanotubes in commonly used sample filter media Global Journal of Environmental Science and Management Agglomerates Carbon nanotubes (CNTs) Filter deposition Particulate sample filters Scanning electron microscopy (SEM), Thermogravimetric analysis (TGA) |
| title | Deposition of carbon nanotubes in commonly used sample filter media |
| title_full | Deposition of carbon nanotubes in commonly used sample filter media |
| title_fullStr | Deposition of carbon nanotubes in commonly used sample filter media |
| title_full_unstemmed | Deposition of carbon nanotubes in commonly used sample filter media |
| title_short | Deposition of carbon nanotubes in commonly used sample filter media |
| title_sort | deposition of carbon nanotubes in commonly used sample filter media |
| topic | Agglomerates Carbon nanotubes (CNTs) Filter deposition Particulate sample filters Scanning electron microscopy (SEM), Thermogravimetric analysis (TGA) |
| url | http://www.gjesm.net/pdf_12729_ebf05883284b1e02a889c1c6d01af17d.html |
| work_keys_str_mv | AT bdsmith depositionofcarbonnanotubesincommonlyusedsamplefiltermedia AT sbhbach depositionofcarbonnanotubesincommonlyusedsamplefiltermedia |