总有机碳测定仪TOC-5000A与

TOC-5000AAurora1030W,,,,(,100871):TOC-5000A(+)Aurora1030W(),TOC-5000A(01535ppm)Aurora1030W(01047ppm),(1ppm)Aurora1030W(10ppm),TOC-5000AAurora1030W,90%,,,2g(Aurora1030W)0116g(TOC-5000A):;;;;:X832:A:100226002(2008)0620052204PerformanceAssessmentofTOC-5000AandAurora1030WWANGRong,etal(CollegeofUrbanandEnvironmentalScience,PekingUniversity,Beijing100871,China)Abstract:Instrumentperformance(precision,accuracy,methoddetectionlimit,andlinearrangeofcalibrationcurve)ofTOC-5000A(combustionPnon-dispersiveinfraredgasanalysismethod)andAurora1030W(wetoxidation)werecompared.MethoddetectionlimitofTOC-5000Awas01535ppm,beinghigherthanthatofAurora1030W(01047ppm),anditsprecisionwasworseatTOClevelof1ppm,butbetteratTOClevelof10ppm.Instrumentsaccuracywasevaluatedbytherecoveryofaddedstandardsubstanceinvariouscategoriesofwatersamples,andalltherecoverieswereabove90%.Whilelowamountoforganiccarbonadded,therelationshipbetweencarbonamountandinstrumentalrespondswasnon-linear.Respondsfactordecreasedwhilemorecarbonadded,andthenkeepconstantbeyondcarbonlevelsof2g(Aurora1030W)and0116g(TOC-5000A)respectively.Keywords:Combustionoxidation;Wetoxidation;Precision;Accuracy;Methoddetectionlimit:2007208227::(1987-),,,.:(TOC),(COD),(BOD),TOC,,,,,TOCCODBOD,TOCCODBOD[1],TOC,[2]TOC,,(),(),;,,GC-FIDGC-TCD,+TOC[2]TOC,,TOC[3][4],TOC,246200812EnvironmentalMonitoringinChinaVol.24No.6Dec.2008TOC80%105%,,COD50%[4]TOC5000A(+)IOAurora1030W(+),,1111TOC5000AAurora1030W,11TOC5000AAurora1030WTOC-5000AAurora1030W++TC,IC,TOC,NPOCTC,TOC,TIC,POC68070100(POC:350400)4ppb4000ppm(TC)4ppb5000ppm(IC)2ppb30,000ppm(TC,TOC,TIC);500ppb30,000ppm(POC)2000ppm(IC,2500ppm),1%,20004000ppm(IC,25005000ppm),2%2%2ppbC502000l(2500l);4250l(250l)10l10ml112(TC):21125g(80902),1L,,1000ppmTC(IC):3150g(1051)4141g(2851),1L,,1000ppmIC:(1);(2);(3)0145m,113[5],11311,(RSD)(1)1ppm10ppm,10(Aurora1030W:2ml,NPOC;TOC-5000A:1680l,TC-IC),RSD,RSD=(xi-€x)2Pn-1€x(1),xi;€xn;n11312(MDL)99%[6],,(7)(MDL15,),:MDL=Stn-1,1-=0.99(2),n;Sn;tstudentst;1-21(Aurora1030W:2ml,NPOC;TOC-5000A:80l,TC-IC),,(Aurora1030W)(TOC5000A)11313,:TOC-5000AAurora1030W53:()TOC(Aurora1030W:2ml,NPOC;TOC-5000A:1680l,,TC-IC),TC(5ml1000ppm500ml),TOC,,11314TC()IC(P)(2050100200500ppb,125102050ppm),Aurora1030WTCIC(1ppm,715ml;1ppm,2ml,NPOCIC)TOC5000A,1,125102050ppm(1680l,,TCIC)(),,2211101ppm10ppmTC(),(2),(10ppm),TOC5000A,,,RSD0148%,1TOC5000A,1ppm,,RSD7121%;,Aurora1030W,RSD1189%(1ppm)1130%(10ppm),1,,210n=10TOC-5000AAurora1030W1ppm10ppm1ppm10ppm11001010911001010001911116919910115019711029188101257121%0148%1189%1130%21221,n=21,99%,t=21845(2),01535ppm(TOC-5000A)01047ppm(Aurora1030W),Aurora1030WTOC-5000A,,TOC-5000A,,,1213,,,TOC,TOC,,,,,Aurora1030W94167%96196%93158%,TOC-5000A7615%9415%91136%,,,,,,214TCIC,TCIC,(1,2),Aurora1030W,r201996854246200812(TC)019996(IC)TC(200g),,r2019997,TCIC3175g,r2019683(TC)019868(IC)TOC-5000A(01535ppm),1ppm100ppm(2),,r2019982(TC)019998(IC)Aurora1030W,,TCIC0108g,r2019821(TC)019979(IC),(3),2g(Aurora1030W)0116g(TOC-5000A),,,,1Aurora1030W(TCIC)2TOC-5000A(TCIC)3(:Aurora1030W;:TOC-5000A)3TOC-5000A,Aurora1030W,,,01535ppmAurora1030W(1),01047ppm(10ppm),TOC-5000AAurora1030W,90%,:TOC-5000AAurora1030W55:2008205230:(20777021);(D0610012);(04BS312):(1983-),,,.:,,(TOC-5000A:0108g,5ppm;Aurora1030W:3175g,015ppm),,,:[1],,.[J].,2003,4(19):39-42.[2],,.TOC[J].,2002,23(5)():224-227.[3].TOC[J].,2000,12(6):18-19,21.[4],,.[J].,1998(6):45-48.[5].[J].,2002,11(1):30-31.[6]USEPA,Contractlaboratoryprogramnationalfunctionalguidelinesforinorganicdatareview,USEPA,Washington,DC.,2004,p134.,,,(,362021):3,(1)3139631929mgPL,1192721182mgPL,1106111236mgPL,0108401059mgPL,(2),(3)DO,DO3:;;;:X824:A:100226002(2008)0620056205SpatialDistributionofNitrogenintheWaterofDonghuandXihuLakeinQuanzhou,FujianCHENLi,etal(DepartmentofEnvironmentalScienceandEngineering,HuaqiaoUniversity,Quanzhou,362021,China)Abstract:TensiteswereselectedforwatersamplingfromDonghuLakeandtwelvesitesfromXihuLakeinQuanzhouinMay,20071ThespatialdistributionofnitrogeninthewaterofDonghuandXihuLakeandthecorrelationsof3differentformsofnitrogenwithDOinthewaterwerediscussed.Itwasfoundthat:(1)TheaveragecontentsofTN,NH4+-N,NO3--NandNO2--NinDonghuLakeandXihulakeare31396with31929mgPL,11927with21182mgPL,11061with11236mgPLand01084with01059mgPL.NH+4-Nismaininthetwolakes.(2)ThecontentsofTN,NH4+-NandNO2--NatsamplingsitesnearbythewateroutletandthezooinDonghuLakearehigherthanothersites.ThedistributedtendencyofNH4+-NandNO3--Natthewaterinlet,northandmiddleofDonghuLakeisalmostconsistent.ThecontentsofTN,NH4+-N,NO3--NandNO2--NatsoutheastofXihuLakearehigherthanothers.(3)ThenitrogeninDonghuLakedoesntdependontheDOcontent,butinXihuLakethe3differentformsofnitrogenallhavegoodcorrelationswithDOcontent.Keywords:Nitrogen;Spatialdistribution;DonghuLakeinQuanzhou;XihuLakeinQuanzhou246200812EnvironmentalMonitoringinChinaVol.24No.6Dec.2008