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WANG Wei, WU Ji-zong, DENG Wei-qin, TAO Miao-miao, TAN Shu-ping. Determination of N, N-Dimethylhydroxylamine by Headspace Solid-Phase Micro-Extraction and Gas Chromatography[J]. Journal of Nuclear and Radiochemistry, 2015, 37(6): 441-446. DOI: 10.7538/hhx.2015.37.06.0441
Citation: WANG Wei, WU Ji-zong, DENG Wei-qin, TAO Miao-miao, TAN Shu-ping. Determination of N, N-Dimethylhydroxylamine by Headspace Solid-Phase Micro-Extraction and Gas Chromatography[J]. Journal of Nuclear and Radiochemistry, 2015, 37(6): 441-446. DOI: 10.7538/hhx.2015.37.06.0441
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Determination of N, N-Dimethylhydroxylamine by Headspace Solid-Phase Micro-Extraction and Gas Chromatography

  • China Institute of Atomic Energy, P. O. Box 275(88), Beijing 102413, China

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  • A method for the determination of N, N-dimethylhydroxylamine(DMHAN) has been established by coupling headspace solid-phase micro-extraction (HS-SPME) with gas chromatography(GC). The 65 μm PDMS/DVB coating was selected for micro-extractor. The extraction conditions, such as extraction time, extraction temperature, solution acidity, headspace volume and desorption time were discussed and optimized. The linear range of DMHAN was 1.65-49.4 mmol/L (r=0.997 3). The relative standard deviation was 2.1% (n=5). The detection limit is 4.67×10-2 mmol/L. The recoveries are from 96.1% to 103%. This method is simple, stable and suitable for the determination of DMHAN in the process solution of spent fuel reprocessing.
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