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题名: Determination of trace level nitroaromatic explosives in wastewater by stir bar sorptive extraction coupled to gas chromatography
作者: Guan Wen-Na1;  Xu Feng1;  Meng Zi-Hui2;  Guan Ya-Feng1
关键词: bar sorptive extraction ;  nitroaromatic explosive ;  thermal desorption ;  gas chromatograpy
刊名: CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
发表日期: 2008-03-10
卷: 29, 期:3, 页:468-472
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: A novel poly( phthalazine ether sulfone ketone, PPESK) stir bar was prepared. The method for analyzing trace level nitroaromatic explosives in aqueous samples by stir bar sorptive extraction coupled to GC through thermal desorption was developed. The stir bar can be placed into thermal desorption unit after extraction at 250 degrees C, so the sensitivity of the method can be enhanced because the analytes are completely transferred into GC column. The PPESK stir bar was proved to show one order of magnitude higher extraction capacity than the corresponding PPESK fiber and two orders of magnitude higher extraction efficiency than PDMS stir bar. The limits of detection( LODs) were in the range of 0.008-0.022 mu g/L. The repeatability of the method(RSD) was from 6.9% to 15.9%, and the linear ranges were 0.06-10.0 mu g/L with correlation coefficients of 0.9962-0.9998 except for TNT. By using the optimized extraction method, the wastewater samples produced in explosive production process were analyzed. The recoveries were from 88% to 100% for low concentration sample and from 61% to 88% for diluted high concentration sample. The RSDs of the repeatability of real sample application were lower than 11%.
关键词[WOS]: MASS-SPECTROMETRY ;  BIOLOGICAL-FLUIDS ;  AQUEOUS SAMPLES ;  SOLID-PHASE ;  PESTICIDES
语种: 英语
WOS记录号: WOS:000254265100008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140989
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dept Instrumentat & Analyt Sci, Dalian 116023, Peoples R China
2.Beijing Inst Technol, Sch Chem Engn & Environm, Beijing 100081, Peoples R China

Recommended Citation:
Guan Wen-Na,Xu Feng,Meng Zi-Hui,et al. Determination of trace level nitroaromatic explosives in wastewater by stir bar sorptive extraction coupled to gas chromatography[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2008,29(3):468-472.
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