紫外分光光度法测定工业废水中的油含量

©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(2002)03-0051-0313,2(11,314500;21,314500):,,,,228nm,010550mg/L,,r=019994,98%102%,110%211%,:;;:O657132:B:2001-09-27,,,,,,[2,3],,,[1],,,,,,1111751G;25mL:3060,,288nm80%;:3001h,112,,,,655,65,1131000mL,20mL,,5mL(1+1),20g,2min,,15g,50mL;,20mL;10mL,,,288nm,10mm,,,221140mg/L,,,11,224234nm,228nm212,,41004810mg/L228nm,10mm,,,,-:A=am+b,a=919410-2,b=413110-3,r=01999415#20#,,,22,1522320026MetallurgicalAnalysisVol.22,No.3June,2002©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(mg)Volumeofsample(mL)Calculated(mg/L)Found(mg/L)Recovery101501000015001511022110010001100019898103210010002100119798163,,2,110%211%2Table2Comparisonofresultsdeterminedbyproposedmethodwiththesebystandardmethodmg/LSampleNo1StandardmethodProposedmethodFoundAverageRSD(%)161776168,6174,6168,6162,61746172110232123210,3114,3216,3312,321632142111;24,,,,:[1].()[M].:,1989.3721[2],.[J],1993,11(5):581[3].()[M].:,19851971(50)2522320026MetallurgicalAnalysisVol.22,No.3June,2002©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:[1],1[M]1:,199714031[2]ShigendoAkita1Chem1Tech1Biotechnol.[J],1995,62:3451[3]1[J],1998,26(10):12221[4],,,1[J],1997,25(10):12061[5],,1[J],1999,40(1):281[6],,1[J],2000,21(3):281DeterminationoftracemercuryinflyashbyhighlysensitivespectrophotometryLUODao2cheng,YIPing2gui,CHENAn2guo,HUZhong2yu(InstituteofEnvironmentalEngineering&ChemicalHi2tech1XiangtanPolytechnicUniversity,Xiangtan411201,China)Abstract:InthebuffersolutionofNH3H2O-NH4Cl(pH1015)thecolorreactionoftraceHgCwithanewreagent62nitrobenzothia2zolyldiazoamino242nitrobenzene(NBTDNB)hasbeenstudied1Basedonthisstudy,anewhighlysensitivespectrophotometryfordeterminingtraceHgChasbeendeveloped1InthemediumofweakalkalineandinthepresenceofTritonX2100,HgCreactswithNBTDNBtoformanorange2yel2lowcomplexwhichhascomponentratioof121Themaximumabsorptionofthecomplexisat450nmand530nmrespectively,andHgCisdeter2minedbydualwavelengthspectrophotometrywithapparentmolarabsorptivity2120105Lmol-1cm-11Beerslawisobeyedintherangeof0-1310g/25mLforHgC,thedetectionlimitis21810-9g/LandtheRSDarefoundtobeintherangeof211%-312%1ThemethodhasbeenappliedtothedeterminationoftraceHginflyashwithsatisfactoryresults1Keywords:62nitrobenzothiazolyldiazoamino242nitrobenzene;mercury;highlysensitivity;dual2wavelengthspectrophotometry;flyash(52)DeterminationofoilcontentinindustrialwastewaterbyUVspectrophotometryZHOUJian2yong1,GUYue2ming2(11TongxiangEnvironmentalMonitoringStation,Tongxiang314500,China;21TongxiangChemicalEngineeringCo1,Ltd1,Tongxiang314500,China)Abstract:Withregardtotheabsorptionofultravioletrayswiththesamecharacteristicwavelengththerearegreatdifferencesfordifferentoils1Inordertoensuretheconformityforthecombinedcharacteristicsofthestandardsamplewiththatofthepollutedsubstances,theoilextractedfromthetestedpollutedwastewaterwithpetroleumbenzineandbeingpurifiedwasusedasthestandardsample1Beerslawisobeyedintherangeof0105-50mg/Lwiththewavelengthat228nm1Thecorrelationcoefficientwas019994,therecoverieswereintherangeof98%-102%andRSD(n=5)wereintherangeof110%-211%1Thedeterminationresultswereaccurateandsatisfactory1Keywords:UVspectrophotometry;oil;extractionwithpetroleumbenzine0522320026MetallurgicalAnalysisVol.22,No.3June,2002