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https://hdl.handle.net/11681/11754| Title: | Development of a membrane for in-situ optical detection of TNT |
| Authors: | University of New Hampshire. Dept. of Chemistry. U.S. Army Toxic and Hazardous Materials Agency. Zhang, Yuke Seitz, W. Rudolf Sundberg, Donald C. |
| Keywords: | Contaminated groundwater Sensor Explosives TNT Fiber optics Water pollution |
| Publisher: | Cold Regions Research and Engineering Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Series/Report no.: | Special report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 88-24. |
| Description: | Technical report Abstract: A membrane has been developed for in-situ determination of polynitroaromatic hydrocarbons in groundwater at levels as low as 10 ng/mL. A typical membrane is prepared by dissolving the following in tetrahydrofuran: 0.5 g poly(vinyl chloride) (PVC), 0.2 mL dioctyl phthalate to serve as a plasticizer and 0.12 mL Jeffamine T403, a polyoxyethyleneamine that also acts as a plasticizer, as well as reacting with polynitroaromatic hydrocarbons to produce a colored product. The membrane is formed by casting the solution into a glass Petri dish with a diameter of 8 cm and allowing the solvent to slowly evaporate. Trace amounts of 2,4,6-trinitrotoluene (TNT), 1,3,5-trinitrobenzene (TNB), 2,4,5-trinitrotoluene (2,4,5-TNT), and methyl-2,4,6-trinitrophenyl nitramine (tetryl) react with the membrane to produce a visually observable reddish brown color. No pretreatment of water samples is required. Recoveries of 0.1 to 4.0 ppm TNT from spiked groundwater ranged from 95% to 105%. Direct analysis of water samples agreed with HPLC results. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/11754 |
| Appears in Collections: | Special Report |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| SR-88-24.pdf | 553.14 kB | Adobe PDF |  View/Open |