高氯离子废水低浓度COD的分析技术

:2002209205;:2002212211:(1965-),,,1COD(,116100):,COD,COD,Cl-COD,Cl-COD,COD,COD:;COD;:X832:A:100226002(2003)0220044202TechniquesoflowCODanalysisofwastewaterwithhighchlorideCUINa(EnviromentalMonitoringStationofJinzhouDepartmentDalianCity,DalianJinzhou116100,China)Abstract:ErrorswillappearwhenCODvalueisdeterminedbyGB11914289forhighCl-concentrationwatersample.InthispapertheeffectandeliminatingeffectmethodofhighCl-concentrationtoCODdeterminationwasinvestigatedthroughexperiment1TheresultshowthatdeterminingtheCODamountofwatersamplewithoutsequestratingCl-,andthenminustheCODvalueproducedbyCl-itself,withthatamountcannotonlyaccuratelyinflectwatersampleCODvalue,butalsohavegoodrepeatability1Keywords:highCl-concentration;COD;sequestrate2000mgöL,2000mgöL,COD(50mgöL),01025molöL,,COD,,(,,),1000020000mgöL,COD150mgöL,100mgöLCODCOD:CODCODCODCOD1GB11914289,COD,85%95%,Cl-100%,111Ag2SO4,Ag2SO4,,:Ag++Cl-AgClCl-Ag+,,COD112K2Cr2O7Cl-,Cl-,,2Cl-+1ö2O2Cl2+[O]2-,,1mgCl-01226mg221121111CODGB11914289192Vol119No1220034EnvironmentalMonitoringinChinaApr120032111221113,COD:21112Cl-,COD2COD(COD(Cl-)),,COD(COD),CODCOD=COD-COD(Cl-)212250ml,33cmCOD,61000WNaCl,;()GB1191428921321311COD2Cl-NaCl,COD,Cl-COD,COD2Q(Cl-),COD1000mgöL,2500mgöL,5000mgöL,6250mgöL,10000mgöL,12500mgöLCOD,COD,11COD1,Cl-COD,:COD=01223Q(Cl-)+616(Q(Cl-)mgöL)1mg01226mg,9818%21312CODCOD100mgöL,NaCl,1250mgöL,2500mgöL,5000mgöL,6250mgöL,10000mgöL,COD,11Cl-COD(COD=100mgöL)(mgöL)(g)COD(mgöL)1250012510013013013%250001510219219219%500011010518518518%625011310713713713%100002101271627162716%,Cl-COD,,COD,21313CODCOD,(),COD,COD,CODCOD100mgöLNaCl,1250mgöL,2500mgöL,5000mgöL,6250mgöL,10000mgöL,,CODCOD2COD,COD,22Cl-COD(COD=100mgöL)(mgöL)COD(mgöL)COD(mgöL)1250383189518-412-412%25006671810018018018%500012241210012012012%625015041810218218218%1000023431710417417417%(53)54:COD,,,(45)2,CODCOD,5%21312COD,,21314COD100mgöLNaCl,5000mgöL,33COD(mgöL)COD(mgöL)12271210312312312%12261710217217217%12281610416416416%1222149814-116-116%12241210012012012%12271510315315315%12261310213213213%12241710017017017%12281810418418418%12271710317317317%X=10214(mgöL)S=2105RSD=01020,,3(1)COD,1mg01223mg(2)COD,COD,(3)CODCOD,COD,,:[1],1()[M]1:,1989135423561[2]1COD[J]1,1998(5):1202211[3]1[J]1,1999(6):352371,,(,256618)5000ml2ö3,,2000ml,,,,215ml,900100035: