废水中总磷测定消解方法的比较

224100、。。ComparisionofDifferentDigestionforDeterminationofTotalPhosphorusinWastewaterDINGXiao－jingCAIYingGUXiao－yanCHENJingDafengEnvironmentalMonitoringStationJiangsuDafeng224100ChinaAbstractThecomparativeexperimentsdifferentdigestionmethodsofdeterminationoftotalphosphoruscontentwerecarriedoutfromthestandardcurvesamplesmeasuredandsoon．Theresultsshowedthattheexperimentalprecisionandaccuracygotbydifferentdigestionmethodsmettherequirements．Keywordstotalphosphorusdigestioncomparativeexperiment1965－。。。、、1。。1700nm2。22．17230COD50mL。2．2100g/L50μg/mL2μg/mL。50g/L1．4g/mL1．68g/mL。2．3500mLpH≤12～5℃24h。2．410．000．501．003．005．0010．0015．00mL50mL25mL4mL1．1kg/cm2120℃30min。2－25mL。4mL108min。50mL。3－125mL25mL2mL10mL。5mL10mL。3mL3～4mL。10mL11mol/L50mL。2．550mL1mL。30s2mL15min。700nm30mm。·28·20113922PO3－4μg1。101．002．006．0010．020．030．0barK2S2O8－00．0280．0580．1770．2970．5980．8890．02970．0010．9999HNO3－HCO400．0270．0560．1750．2940．5930．8840．02930．0020．9996K2S2O8－00．0280．0590．1760．2990．6010．8880．02980．0020．99982．650mL。2．6．10．465±0．020mg/L。2K2S2O8－1．11%1．05%HNO3－HCLO41．16%1．91%K2S2O8－1．10%1．07%。21K2S2O8－HNO3－HCLO4K2S2O8－/mg/L0．3600．3540．3620．3550．3560．3560．3500．3420．3550．3540．3580．3500．3530．3510．3560．3490．3490．358/mg/L0．3540．3520．356/%0．390．580．39/%1．111．161．1032K2S2O8－HNO3－HCLO4K2S2O8－/mg/L0．4640．4640．4740．4560．4450．4760．4680．4620．4640．4600．4530．4680．4600．4520．4680．4680．4680．476/mg/L0．4630．4570．471/%0．480．870．50/%1．051．911．072．6．125．00mL350mL3mL。42/μg/μg/μg/%K2S2O8－8．856．0014．5397．8HNO3－H2SO48．806．0014．0895．1K2S2O8－8．906．0014．6298．13。1。。2。395%。4。K2S2O8－、K2S2O8－HNO3－H2SO4。1．M．2002243．2GB11893—89S．·38·20113922