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DTIC ADA298131: Analysis of Volatile Contaminants in U.S. Navy Flee... |
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by Defense Technical Information Center |
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Contamination was suspected of U.S. Navy Fleet soda lime |
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(High Performance Sodasorb(R) when an ammonia-like odor |
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was reported during its use in August 1992. This material |
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contained indicator dye and was used for carbon dioxide |
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absorption during diving. This incident had a major |
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impact on the U.S Navy diving program when the Navy |
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temporarily banned use of Sodasorb(R) and authorized |
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Sofnolime(R) as an interim replacement. The Naval Medical |
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Research Institute was immediately assigned to |
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investigate. Testing involved sampling from the headspace |
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(gas space) inside closed buckets and from an apparatus |
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simulating conditions during operational diving. Volatile |
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organic compounds were analyzed by gas chromatography and |
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mass spectrometry; ammonia and amines were measured by |
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infrared spectroscopy. Significant amounts of ammonia (up |
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to 30 ppm), ethyl and diethyl amines (up to several ppm), |
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and various aliphatic hydrocarbons (up to 60 ppm) were |
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detected during testing of both Sodasorb(R) and |
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Sofnolime(R). Contaminants were slowly removed by gas |
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flow and did not return. The source(s) of the ammonia and |
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amines are unknown, although they may result from the |
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breakdown of the indicator dye. Hydrocarbon contamination |
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appeared to result from the materials of which the bucket |
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is constructed. Based on these findings, the U.S. Navy is |
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expected to phase in non-indicating soda lime that will |
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be required to meet defined contaminant limits. jg p.3 |
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Date Published: 2018-03-23 23:18:43 |
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Identifier: DTIC_ADA298131 |
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Item Size: 56070456 |
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Language: english |
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Media Type: texts |
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# Topics |
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DTIC Archive; Lillo, R. S.; NAVAL MED... |
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