城市污水厂剩余污泥中总磷的测定

张肖静,高健磊,刘航航,闫怡新(郑州大学水利与环境学院,河南郑州450002):,,RSD1.0%,98.0%~104%:;;:O657.32:B:1006-2009(2010)05-0039-03DeterminationofTotalPhosphorusinSurplusSludgeofUrbanSewageTreatmentPlantZHANGXiaojing,GAOJianle,iLIUHanghang,YANYixin(CollegeofWaterConservancyandEnvironmentalEngineering,ZhengzhouUniversity,Zhengzhou,Henan450002,China)Abstract:Thetotalphosphorusinsurplussludgeofurbansewagetreatmentplantwasdeterminedbymolybdenumantimonyspectrophotometrywithdigestionofsaturatedpotassiumpersulfatesolution.Byoptimizingpretreatmen,tdigestion,dosageofK2S2O8andqualityofsludgesample,goodlinearitywasobtained.TheRSDofparallelsludgesampleswas1.0%.Spikedrecoverieswerebetween98.0%and104%.Keywords:Totalphosphorus;Molybdenumantimonyspectrophotometry;Surplussludge:2010-06-04;:2010-07-15:(082102350004):(1986),,,,,,,[1],,[2],,11.1主要仪器与试剂T6;;;40;;100g/L1.2样品来源A2/O,4,,75000m3/d,()4!2!4,60%,180%,1mg/L,99%,2000m3/d,(MLSS)8000mg/L1.3MLSS的测定100mL,,105∀2hMLSS,,1.4样品预处理100mL,3,,3922520101015min,,,10g,,,,60∀(2h),,,40,1.5试验方法0.10g~0.15g(0.0001g),250mL,100mL50mL,,1.1kg/cm2,0.5h(),0.45m,250mL,2mL50mL[2],,700nm,(m,g)(C,mg/L):C1=mMC=C1#MLSS1000+C2:C1,mg/g;M,g;C2,mg/L22.1试验条件优化2.1.1,,9,60∀3,,,,,RSD;,,,,RSD,60∀2h2.1.2,,,,,,,,,,(),39,113Table1Comparativeresultof3kindsofdigestionmethods∃w/(mg%g-1)w/(mg%g-1)RSD/%11.5h(1h)29.729.90.6230.1329.942h(1h)30.029.90.4529.8629.971h(0.5h)30.130.10.5829.9930.2∃1,3,,,,,2.1.3,640225.201010,100mL,,,22Table2ComparativeresultofK2S2O8additionV/mLm/gm/g∃w/(mg%g-1)1400.1197357329.82450.1203360930.03500.1206364030.24550.1200362030.25600.1208364430.26700.1210365130.2∃2,50mL,,50mL2.1.4,,,,0.1000g,,2.2校准曲线[1],,m=102.4A-0.0027,R2=0.999911Fig.1Standardcurveofdetectingtotalphosphorus2.3精密度试验6,6,32.4加标回收试验6,,,,[3],43Table3Resultsofprecisionanalysisw/(mg%g-1)w/(mg%g-1)RSD/%130.130.330.330.229.530.030.11.0230.230.030.430.329.830.230.20.7330.230.329.830.030.130.230.10.6430.030.129.930.230.430.430.20.6530.030.230.630.230.329.630.21.0630.430.230.030.329.830.130.10.64Table4Resultsofspikedrecoverytestm/gm/gm/gm/g/%10.111516.77824.8610120.122118.48826.4399.430.130119.78827.9610240.141821.60425.5298.050.150222.96427.0610260.160724.70428.851043(1)60∀,,MLSS,,(2),,,(3),,,30.0mg/g,[4](4),RSD1.0%,98.0%~104%,[][1],.[J].,2006,18(2):32-34.[2]&∋.[M].4.:,2002.[3].[J].,2004,16(2):42-43.[4]HENZEM,HARREMOESP,JANSENJLC.WastewatertreatmentBiologicalandchemicalprocesses[M].Berlin:SpringerVerlag,1997.41225.201010