淀粉-碘化镉法检测聚丙烯酰胺类聚合物浓度测量条件的优化.doc

淀粉-碘化镉法检测聚丙烯酰胺类聚合物浓度测量条件的优化 第39卷第l1期 2010年11月 应用化工 AppHedChemicalIndustry V01.39N0.11 NOV.2010 淀粉一碘化镉法检测聚丙烯酰胺类聚合物浓度 测量条件的优化 舒炼,柳建新,吕鑫,郭拥军4 (1.西南石油大学油气藏地质及开发工程国家重点实验室,四川成都610500;2.中海油研究总院,北京100027; 3.海洋石油高效开发国家重点实验室.北京100027;4.西南石油大学化学化工学院,四川成都610500) 摘要:考虑溴水浓度及加量,pH,反应时间等因素后,选定了淀粉.碘化镉法的最佳测量条件及检测范围.结果表 明,加待测液2mL,纯水25mL,pH=5.0缓冲液5mL,饱和溴水1mL,摇匀静置15rain;加甲酸钠5mL,摇匀静置 5min;~淀粉一碘化镉5mL,摇匀静置20min,590am处测吸光度;0～140ms/L为最佳检测范围,重复性好,线性相 关系数达99.00%以上.运用该法测定复合驱中不同类型聚丙烯酰胺类水溶性聚合物的浓度,范围宽,准确性高, 受不同矿化度及表面活性剂的干扰小,可用于静态吸附,动态滞留,色谱分离等研究. 关键词:淀粉一碘化镉;聚丙烯酰胺;疏水缔合水溶性聚合物;检测范围 中图分类号:TQ423.113文献标识码:A文章编号:1671—3206(2010)II一1766—04 Measurementoptimizationofpolymerconcentrationof polyacrymidebythestarch.cadraiuraiodinemethod . Lian,Jian—xin,Xin,G∞Yong-jun, (I.StateKeyLaboratoryofOilandGasReservoirsGeologyandExploration,SouthwestPetroleumUniversity,cheIl咖610500, China;2.CNOOCResearchInstitute,Beijing100027,China;3.StateKeyLaboratoryofOffshoreOilExploitation,Beijing 100027,China;4.SchoolofChemistryandChemicalEngineering,SouthwestPetroleumUniversity,Chengdu610500,C~na) Abstract:Consideringtheconcentrationanddosageofbrominewater,pH,timefactorsandSOon,theopti? malconditionsandtestingrangebythestarch—cadmiumiodinespectrophotometryhavebeenestablished. -I1Ieresultshowsthattheadditionamountofdeterminedsolution2mL,pH=5.0buffer5mL,saturated brominewater1mL,shakedupandlayupfor15rain;theadditionamountofsodiumformate5mL, shakedupandlayupfor5min;theadditionamountofcadmiumstarch—cadmiumiodine5mL,shakedup andlayupfor20min:measuredtheabsorbanceat590nm.ebesttestingrangeofthismethodis20— 140mg/L,thelinearcorrelationcoefficientreaches99.00%,withgoodrepeatability.Hishaccuracyand widemeasurementrangecouldbeobtainedbyusingthismethodtomeasure山econcentrationofPAM. ismethodwithlitileinterferenceofdifferentmineralizationandsurfaetantcouldbeusedincombination floodingtostudythestaticadsorption,dynamicretention,chromatographicseparationandSOon. Keywords:starch—cadmiumiodine;PAM;HAWP;examinationrange 疏水缔合水溶性聚合物(HAWP)是部分水解聚 丙烯酰胺的长链