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AN EASY-TO-MAKE OZONE GENERATOR FOR THE IMMOBILIZATION OF STATIONARY PHASES IN GC CAPILLARY COLUMNS
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作者 Bing Jiu XU and Shan Nian DONG Dept. of Anal. Chem., School of Pharm. Sci. Beijing Medical University, Beijing, 100083 《Chinese Chemical Letters》 SCIE CAS CSCD 1991年第10期793-796,共4页
An easy-to-make ozone generator which can be made with readily available materials is proposed. Concentration of the ozone prepared with this generator could reach that of ozone in equilibrium with oxygen. Cured with ... An easy-to-make ozone generator which can be made with readily available materials is proposed. Concentration of the ozone prepared with this generator could reach that of ozone in equilibrium with oxygen. Cured with the ozone thus prepared, GC capillary columns with immobilized SE-54 phase and excellent chromatographic performance were successfully prepared. 展开更多
关键词 AN EASY-TO-MAKE OZONE GENERATOR FOR THE IMMOBILIZATION OF STATIONARY PHASES IN gc capillary COLUMNS gc
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Determination of trace amounts of chlorinated insecticides and fungicides in ginseng using capillary gas chromatography and ^(63)Ni electron capture detector
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《Journal of Environmental Sciences》 SCIE EI CAS CSCD 1993年第3期336-341,共6页
A method for the simultaneous determination of a series of chlorinated insecticides and fungicides as residues in ginseng is presented in this article. Pulverized samples are subjected to Soxhlet extraction with aceto... A method for the simultaneous determination of a series of chlorinated insecticides and fungicides as residues in ginseng is presented in this article. Pulverized samples are subjected to Soxhlet extraction with acetone-petroleum ether and the extract is partitioned between petroleum ether and aqueous sodium sulfate solution (2:98). The combined petroleum ether phase is cleaned up by sulfuric acid and analyzed by capillary gas chromatography using 63Ni electron capture detector. Recoveries from the different concentrations for 11 kinds of chlorinated insecticides and fungicides are between 92.40 and 103.7% with coefficients of variations ranged 1.22 and 9.53% without samples, and between 89.00% and 104.10% with coefficients of variations between 1.16% and 9.16% with samples. The detection limits are 0.2- 7.0 ng/kg. 展开更多
关键词 chlorinated insecticides fungicides capillary gc ginseng.
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Analysis of the Volatile Constituents of PinusTabulaeformis Carr. Pine Cones
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作者 ZHANG Wei-hua and HOU Dong-yan(Department of Chemislry, Anshan Normal College,Anshan, 114005)HUI Rui-hua and JING Run(Experiment centre, Liaoning University, Shengyang 110036 ) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1994年第4期360-363,共4页
AnalysisoftheVolatileConstituentsofPinusTabulaeformisCarr.PineConesZHANGWei-huaandHOUDong-yan(DepartmentofCh... AnalysisoftheVolatileConstituentsofPinusTabulaeformisCarr.PineConesZHANGWei-huaandHOUDong-yan(DepartmentofChemislry,AnshanNor... 展开更多
关键词 capillary gc/MS method identification Pinus tabulaeformis carr. pinecones Volatile oils
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Computer-assisted optimization of temperature programming and flow rate in capillary gas chromatography
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作者 Wang, QS Zhu, CS +1 位作者 Yan, BW Zhang, ZC 《Chinese Journal of Chemistry》 SCIE CAS CSCD 1996年第3期217-221,共5页
关键词 capillary gc OPTIMIZATION MICROCOMPUTER
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