| Abstract: | The US EPA, as a part of the Chemical, Biological, Radiological-Nuclear, and Explosives (CBRNE) Research and Technology Initiative (CRTI) project team, is currently working to assess the impacts of an urban radiological dispersion device (RDD) and to develop containment and decontamination strategies. Three efforts in this area are currently underway: development of a laboratory-scale cesium chloride deposition method to mimic a RDD; assessment of cesium (Cs) penetration depth and pathways in urban materials using two dimensional (2-D) mapping laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS); and experimental determination of distribution coefficients (kd) for Cs in water-building material systems. It is critical that, when performing laboratory-scale experiments to assess the fate of Cs from an RDD, the Cs particle deposition method mimics the RDD deposition. Once Cs particles are deposited onto urban surfaces, 2-D mapping of Cs concentrations using LA-ICP-MS is a critical tool for determining Cs transport pathways through these materials. Lastly, distribution coefficients are critical for understanding the transport of Cs in urban settings when direct measurements of its penetration depth are unavailable. An assessment of the newly developed deposition method along with preliminary results from the penetration experiments are presented in this paper. |
| Genre: | Conference Paper |
| ProdID: | 70032736 |
| Citation Author: | Lee, S.; Gibb, Snyder, E.; Barzyk, J.; McGee, J.; Koenig, A. |
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| Citation End Page: | 428 |
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| Citation Language: | English |
| Citation Larger Work Title: | Proceedings of the 31st AMOP Technical Seminar on Environmental Contamination and Response |
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| Citation Number Of Pages: | 14 |
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| Citation Search Results Text: | Experimental approaches to assessing the impact of a cesium chloride radiological dispersal device; 2008; Conference Paper; Proceedings of the 31st AMOP Technical Seminar on Environmental Contamination and Response; Lee, S.; Gibb, Snyder, E.; Barzyk, J.; McGee, J.; Koenig, A. |
| Citation Start Page: | 415 |
| Citation Volume: | 2 |
| Citation Year: | 2008 |
| Type: | citation/reference |
| Text: | Experimental approaches to assessing the impact of a cesium chloride radiological dispersal device; 2008; Conference Paper; Proceedings of the 31st AMOP Technical Seminar on Environmental Contamination and Response; Lee, S.; Gibb, Snyder, E.; Barzyk, J.; McGee, J.; Koenig, A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 2008 00:00 -0600 |
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