| 降低二硫化碳萃取液中痕量苯检出下限的气相色谱法 |
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| 引用本文： | 张爱丽,周集体,王栋,林微,项学敏.降低二硫化碳萃取液中痕量苯检出下限的气相色谱法[J].色谱,1999,17(6):598-599. |
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| 作者姓名： | 张爱丽 周集体 王栋 林微 项学敏 |
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| 作者单位： | 大连理工大学化工学院!辽宁大连116011 |
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| 摘 要： | 摘要：提出一个直接进样口（岛津WBI-17）和SE-30填充柱测定海水中微量苯的二硫化碳萃取气相色谱分析方法。方法的检测下限低、操作简单、样品用量少、重复性好。
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| 关 键 词： | 海洋监测 气相色谱 二硫化碳 萃取 海水 苯 测定 |
A Gas Chromatographic Method to Decrease the Detection Limit of Trace Benzene in CS-2 Extract |
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| ZHANG Ai\|li,ZHOU Ji\|ti,WANG Dong,LIN Wei,XIANG Xue\|min.A Gas Chromatographic Method to Decrease the Detection Limit of Trace Benzene in CS-2 Extract[J].Chinese Journal of Chromatography,1999,17(6):598-599. |
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| Authors: | ZHANG Ai\|li ZHOU Ji\|ti WANG Dong LIN Wei XIANG Xue\|min |
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| Institution: | College of Chemical Engineering, Dalian University of Technology, Dalian 116011, China. |
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| Abstract: | A method to decrease the detection limit of trace benzene in CS2 extract from coastal water by gas chromatography has been studied. A direct injection port (Shimadzu WBI-17) and a 2 m x 2 mm i.d. column packed with Chromosorb W(AW-DMCS) coated with 10% SE-30 was used. It is simpler and has low detection limit, small sample amount and high repeatability. The experiment showed that the trace water in the organic phase and the too small purge flow of the direct injection port could cause serious tailing of CS2 peak. There was an optimum value of the purge flow (purge flow/total flow = 5%). The minimum detectable limit of benzene was 4 micrograms/L. The repeatability (RSD) was better than 6% and the average recovery was 96.7%. |
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| Keywords: | gas chromatography direct injection port CS\-2 extraction coastal water benzene |
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