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ID:36775449
大小:985.29 KB
页数:7页
时间:2019-05-15
《胶束增敏荧光方法测定水中石油类成分及其含量》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、学兔兔www.xuetutu.com第34卷第12期仪器仪表学报Vo1.34No.122013年l2月ChineseJoarna1ofScientificInstrumentDec.2013胶束增敏荧光方法测定水中石油类成分及其含量潘钊,王玉田,吴希军,杨丽丽(1.燕山大学电气lT程学院秦皇岛066004;2.河北省测试计量技术及仪器重点实验室秦皇岛066004)摘要:采用胶束荧光增敏方法,以表面活性剂十二烷基硫酸钠作为荧光增敏试剂,测量不同石油类样品在胶束溶液环境中的荧光发射光谱。实验采用的石油
2、类样品存胶束溶液中的浓度在一定范围内与其胶束溶液的荧光峰值强度呈现良好的线性关系,可以解决石油类物质存水中溶解度很低,难以准确测定浓度的问题。在线性范同内,利用柴油、煤油样品的胶束溶液配制得到已知浓度的混合溶液样本集,分别测量各个样本的荧光光谱,构成三维数据矩阵,利用平行因子分析方法,选择适当的因子,准确估计了预测集中各样本中柴油和煤油的浓度。表明平行因子方法可以在一定程度上克服各种石油类物质荧光光谱相似、重叠的影响,实现对混合胶束溶液中石油类物质进行整体的定性与定量测量。关键词:胶束;荧光;石油
3、类;平行因子;浓度测量中图分类号:X830.20657.3文献标识码:A国家标准学科分类代码:150.2520IdentificationandconcentrationmeasurementofpetroleuminwaterbasedonmicellesensitizationfluorescencemethodPanZhao’,WangYutian’,WuXijun’一,YangLili(.SchoolofElectricalEngineering,YanshanUniversity,Qin
4、huangdao066004,China;2.KeyLaboratoryofMeasurementTechnology&InstrumentationofHebeiProvince,Qinhuangdao066004,China)Abstract:Inthispaper,adoptingthemicellarfluorometrysensitizationmethod,takingsodiumdodecylsulfate,akindofsurfaetant,asthefluorescencesen
5、sitizingreagent,thefluorescenceemissionspectraofdifferent0ilsamplesinthemicellarsolutionenvironmentaremeasured.Theconcentrationoftheoilsampleinthemicellarsolutionhasgoodlin—earrelationshipwithitsfluorescencepeakintensityinacertainrange,whichcanbeusedt
6、osolvetheproblemofthelowwatersolubilityofpetroleumsubstancesandthedifficultyinaccuratelydeterminingtheirconcentration.Themixedsolutionsamplesetwithknownconcentrationisobtainedbymixingthemicellarsolutionsofdieselandkero—senesamplesinthelinearrange.Thef
7、luorescencespectraofdifferentsamplesaremeasuredandathreedimensionaldatamatrixisconstructedbymeasuringthefluorescencespectraofdifferentsamples.Theparallelfactoranalysismethodisadoptedtoaccuratelyestimatetheconcentrationsofdieselandkeroseneofthesamplesi
8、nthepredictionsetthroughchoosingappropriatefactor.Experimentresultsindicatethattheparallelfactor(PARAFAC)analysismethodcanovercometheinfluencesofthesimilarityandoverlapofthefluorescencespectraofvariouspetroleumsubstancesinacertainextentandreal
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