色谱 , 2017, 35(1): 47-53.
10.3724/SP.J.1123.2016.08026
固相萃取采样和气相色谱-质谱检测液化石油气中的芳烃杂质
李海芳
1,
,
高翠华
2,
,
林金明
3,
1.清华大学化学系，微量分析与仪器研制北京市重点实验室，北京100084;
2.清华大学化学系，微量分析与仪器研制北京市重点实验室，北京100084;
3.清华大学化学系，微量分析与仪器研制北京市重点实验室，北京100084
建立石墨化碳（ GCB）为吸附剂的动态采样系统，可实现液化石油气（ LPG）中芳烃杂质的采样和同步萃取富集。 LPG中的芳烃杂质（苯、甲苯、二甲苯、苯乙烯和萘）被快速捕集后，进行气相色谱?质谱（ GC?MS）定性定量分析。与C18和苯乙烯二乙烯苯吸附剂（ PS?DVB）相比，GCB填充柱对芳烃杂质的萃取效率最高。评价了基于GCB填充柱采样的吸附效率、重现性和贮存稳定性。采样和分析方法对氮气模拟气流中8种芳烃的定量分析线性范围为15～1000μg／m3。所开发的方法具有回收率高（92?9％～109?0％）、检出限低（1?0～6?2μg／m3）、准确性好（相对标准偏差为0?6％～5?8％）和准确度高（标准偏差为0?8％～8?2％）等优点。
参考文献：
[1] Lim MCH;Ayoko GA;Morawska L;Ristovski ZD;Jayaratne ER.Influence of fuel composition on polycyclic aromatic hydrocarbon emissions from a fleet of in-service passenger cars[J].Atmospheric environment,200726(26):150-160.
[2] Wu JM;Hu RK;Yue JQ;Yang ZG;Zhang LF.Determination of fecal sterols by gas chromatography-mass spectrometry with solid-phase extraction and injection-port derivatization[J].Journal of chromatography, A: Including electrophoresis and other separation methods,20097(7):1053-1058.
[3] Li K;Li HF;Liu LB;Hashi Y;Maeda T;Lin JM.Solid-phase extraction with C-30 bonded silica for analysis of polycyclic aromatic hydrocarbons in airborne particulate matters by gas chromatography-mass spectrometry[J].Journal of chromatography, A: Including electrophoresis and other separation methods,20071/2(1/2):74-80.
[4] Mangani F.;Maione M.;Lattanzi L..Fast determination of VOCs in workplace air by solid-phase extraction and gas chromatography - Mass spectrometry[J].Chromatographia,19981/2(1/2):57-62.
[5] Batlle R.;Carlsson H.;Tollback P.;Colmsjo A.;Crescenzi C..Enhanced detection of nitroaromatic explosive vapors combining solid-phase extraction-air sampling, supercritical fluid extraction, and large-volume injection-GC[J].Analytical chemistry,200313(13):3137-3144.
[6] Mastrogiacomo AR.;Ottaviani MF.;Pierini E.;Cangiotti M.;Mauro M. Mangani F..Comparison of chemical and physical properties of carbon blacks for sampling and ana lysis of environmental pollutants[J].Chromatographia,20025/6(5/6):345-348.
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