惠州学院HUIZHOUUNIVERSITY毕业论文（设计）中文题目：汽油中硫醇硫的测定及其影响因素的探讨（电位滴定法）英文题目：DiscussiononDeterminationofMercaptansulfurinGasolineanditsInfluencingfactors(Potentiometrictitrationmethod)姓名学号090602130专业班级化学工程与工艺1班指导教师提交日期2013-3-25教务处汽油中硫醇硫的测定及其影响因素的探讨（电位滴定法）【摘要】硫醇硫是石油馏分燃油中具有腐蚀活性的一类含硫化合物。馏分燃油中的硫醇硫含量多少是其使用性能的基本指标之一，其测定对评价燃油对燃料系统零件及发动机本身的腐蚀，对橡胶部件的不良影响，以及对环境的污染等具有重要的意义。为此在汽油的标准中，硫醇硫的含量一直是汽油产品检测的一项重要指标。但由于汽油成份复杂，在实际测定中，总受到许多不定因素的影响，出现了电位波动较大，滴定终点电位突跃不明显等现象。本文对硫醇硫测定的影响因素如滴定剂浓度、试样用量及滴定剂用量、电极灵敏度等进行了试验研究，结果表明何种结论。【关键词】汽油；硫醇硫；电位滴定；影响因素DiscussiononDeterminationofMercaptansulfurinGasolineanditsInfluencingfactors(Potentiometrictitrationmethod)Author:YuanZhiyongChemicalEngineeringandTechnologyClass1,Grade09Instructor:LiangHao(AssociateProfessor)【Abstract】Themercaptansulfurisakindofsulfurcompoundswithcorrosionactivityinpetroleumdistillatefueloil.Thenumberofmercaptansulfurcontentindistillatefuelisoneofthebasicindicatorsofitsperformance,itsmeasurementforevaluatingthefuelcorrosionforfuelsystemcomponentsandtheengineitself,adverseeffectsonrubberparts,andthepollutionoftheenvironmentisofgreatsignificance.Thereforeinthegasolinestandard,contentofmercaptananimportantindexofgasolineproductdetection.Butduetothecomplexgasolinecomposition,intheactualmeasurement,isalwaysaffectedbymanyuncertainfactors,sothattheelectricpotentialfluctuatesgreatly,theendpointoftitrationpotentialjumpisnotobviousphenomenon.Inthispaper,thedeterminationofmercaptanfactorssuchastitrantconcentration,sampledosageandtitrationagentdosage,electrodesensitivityarestudied,resultsshowthattheconclusion..【KeyWords】Gasoline;Mercaptan;Potentiometrictitration;Influencingfactors目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc355267481"1.前言PAGEREF_Toc355267481\h1HYPERLINK\l"_Toc355267482"1.1选题背景PAGEREF_Toc355267482\h1HYPERLINK\l"_Toc355267483"1.2硫醇的简介PAGEREF_Toc355267483\h4HYPERLINK\l"_Toc355267484"1.2.1硫醇的结构和成键PAGEREF_Toc355267484\h4HYPERLINK\l"_Toc355267485"1.2.2硫醇