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https://hdl.handle.net/11681/11613
Title: | Analytical method for determining tetrazene in water |
Authors: | U.S. Army Toxic and Hazardous Materials Agency Walsh, Marianne E. Jenkins, Thomas F. |
Keywords: | Chemical analysis Groundwater Explosives Tetrazene |
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.)) ; 87-25. |
Description: | Special Report Abstract: An ion-pairing RP-HPLC method was developed to determine tetrazene in water. The method uses an LC-18 column and a mobile phase of 2/3 v/v methanol-water modified by 0.01 molar 1-decanesulfonic acid sodium salt. The mobile phase pH was adjusted to 3 with glacial acetic acid. The modified mobile phase was optimal for separating of tetrazene from potential interferences by other explosive compounds such as HMX and RDX and for allowing elution of TNT within a 15-minute run time. The retention time for tetrazene was 2.8 minutes. The UV detector was set at 280 nm. A linear model with zero intercept was found to adequately describe the calibration data. The concentration range tested was 6.2-1238 ~g/L. A spike recovery test on each of four days gave an average recovery of 103%. A reporting limit of 7.25 ~g/L was estimated. The relative standard deviation was approximately 2% over the range tested. Tetrazene was found to be unstable in an aqueous medium at room temperature. Concentrations decreased by 96-100% over 24 hours. Chilled solutions were less prone to degradation than room temperature solutions, and heated solutions (50°C) degraded completely within two hours. Note: The symbol ~ is used to indicate the presence of a mathematical or scientific symbol not available in the character set of this system. The missing symbol will be in the downloaded file. |
Rights: | Approved for public release; distribution is unlimited. |
URI: | http://hdl.handle.net/11681/11613 |
Appears in Collections: | Special Report |
Files in This Item:
File | Description | Size | Format | |
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SR-87-25.pdf | 1.26 MB | Adobe PDF | View/Open |