卷烟主流烟气中氨、甲胺、乙胺的离子色谱分离研究.pdf

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1、理论·实践卷烟主流烟气中氨、甲胺、乙胺的离子色谱分离研究陈伟华(河北中烟工业有限责任公司， 河北 石家庄 050051)摘要：通过对卷烟主流烟气中氨、甲胺、乙胺分离条件进行优化，建立了离子色谱测定卷烟主流烟气中氨、甲胺、乙胺含量的方法。方法考察了色谱柱、流动相浓度、柱温及流速等因素对3种离子分离度的影响，并对15种不同类型和焦油含量的卷烟进行了检测。结果表明：①甲烷基磺酸(MSA)浓度越低，分离度越高；随柱温升高分离效果显著改善；②流速对保留时间的影响较大，但对分离度无明显影响；③氨、甲胺、乙胺的回收率分别为91.5%～98.5%、88.0%～92.0%、84.0%～90.7%，相

2、对标准偏差(RSD)均小于5%；④所选卷烟样品主流烟气中氨、甲胺、乙胺的含量范围分别为2.59～9.46、1.23～2.79、0.19～1.33μg/cig。关键词：离子色谱；主流烟气；氨；甲胺；乙胺；分离度ResearchofChromatographicResolutionforDeterminingAmmonia、Methylamine、EthylamineinMainstreamCigaretteSmokeChenWeihua(TechnologyCenter,ChinaTobaccoHebeiIndustrialCo.,Ltd.,Shijiazhuang050051,Ch

3、ina)Abstract:Amethodfordeterminingtheammonia,methylamineandethylamineinmainstreamcigarettesmokebyionchromatographywasestablishedbyoptimizingtheseparationconditionofammonia,methylamineandethylamine.Thismethodinvolvedthathowtheresolutionsofammonia,methylamineandethylaminewereinfluencedbychromato

4、graphiccolumn,concentrationofmobilephase,columntemperatureandflowrateofeluentetc.Fifteensampleswithdifferenttypesandtardeliveriesweretestedandtheresultsshowedthat:①Theresolutionofthreecompoundsweremainlyaffectedbytheconcentrationofmethanesulfonicacid(MSA)andcolumntemperature.Thelowertheconcent

5、rationofMSAis,thehigherlevelofresolutionis.Inaddition,theincreaseofcolumntemperaturehadapositiveinfluenceonimprovingtheseparationefficiencyinthescopeofthecolumn.②Theflowrateoftheeluentwaslargelyinfluencedbyretentiontime,buthadnoobviouseffectonresolution.③Therecoveryandtheaccuracyofammonia,meth

6、ylamineandethylaminewereintherangeof91.5％～98.5％,88.0％～92.0％and84.0%～90.7%respectivelywiththerelativestandarddeviation(RSD)lessthan5%.④Thedeterminationoftheselectedsampleswithammonia,methylamineandethylaminewereintherangeof2.59～9.46,1.23～2.79,0.19～1.33μg/cigrespectively.Keywords:IonChromatograp

7、hy;MainstreamCigaretteSmoke;Ammonia;Methylamine;Ethylamine;Resolution0引言SM450二十孔道吸烟机(英国Cerulean公司)；IC3000离子色谱仪(美国Dionex公司)；KQ-500型超声波清洗仪(昆烟草中的含氮化合物在燃烧过程中，除了生成微量氨外，[1]山市超声仪器有限公司)；AB204-S型电子天平(感量：0.0001还有可能生成甲胺和乙胺。氨是卷烟烟气中的主要有害成分[2][3]g，Me