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36920119ENVIRONMENTALSCIENCEANDMANAGEMENTVol.36No.9Sep.20112011-05-051982-2006。1674-6139201109-0118-04100035CODcr、CODMnK2Cr2O7KMnO4、、mg/L。、F。CODcr。CODcrCODcrCr6+。X830.2BCorrelationAnalysisonCODMnandCODcrofSurfaceWaterWangHeyangEnvironmentalMonitoringStationofBeijingXichengDistrictBeijing100035ChinaAbstractCODcrandCODMnareusuallyusedasadirectindicatoroftherelativecontentoforganicmatterinthewater.CODcrandCODMnaretheamountofdifferentoxidantsK2Cr2O7andKMnO4demandbyoxidizingtheferroussaltssulfidesandorganicmatterundercertainconditions.Theunitismg/Landbothofthemaretheconditionindex.Thispaperselectedtwomoni-toringsectionsintheXibianmenandYouanmenintheNorthCanalanddidsomecorrelationanalysisbetweentheCODcrandCODMn.ThroughtheanalysisofcorrelationcoefficientandtheFtestitindicatedthatCODcrissignificantlyassociatedwiththeCCODMn.Atthesametimeitindicatedthatthetwolinearrelationsarenotsameeventhetwomonitoringsectionsinthesamewa-tersystembecausethelevelofcontaminationisdifferent.Howeverthedifferenceissmall.SowecanestimateCODcrbyrefer-encingtheCODMninordertoreducethesecondaryCr6+pollutionbyreducingtheCODcrmonitoringfrequency.KeywordsCODcrCODMncorrelationanalysisCODcr、CODMnK2Cr2O7KmnO4、、mg/L。。CrO2-7+14H+幑幐+6e2Cr3++7H2OE0=1.33VE'=1.55VMnO-4+8H+幑幐+5eMn2++4H2OE0=1.51VE'=1.45V·811·36920119·Vol.36No.9Sep.2011、。2。90%50%。2。、、。、。Cr6+。1CODcr、2009120107CODcr12。Xmg/LXiYCODcrmg/LYiCODcrn=19i=1…19。1CODcrXYXY13.721114.83023.328124.53833.521134.03746.132147.54655.560155.13467.252168.946711.4701716.482810.8621810.957913.450199.447105.3342CODcrXYXY13.822116.13323.631124.84234.529134.13546.434144.43356.362154.93367.257164.026711.468178.241810.4601813.15596.5341911.468104.943·911·36920119·Vol.36No.9Sep.20111.1CODcrr=SxySxxSyy槡1Sxy=∑ni=1xi-珋xyi-珋y2Sxx=∑ni=1xi-珋x23Syy=∑ni=1yi-珋y24r=0.8494α=0.05f=n-2=17rαrα=0.4555|r|rαCODcr。r=0.8055α=0.05f=n-2=17rαrα=0.4555|r|rαCODcr。1.2CODcrCODcr珋y=a+bX。abb=SxySxx5a=珋y-b珋x6b=3.76a=16.5CODcrY=3.76X+16.51。1CODcrb=4.02a=15.8CODcrY=4.02X+15.82。2CODcr20.05H0∶b=0V=bSxy7Q=Syy-V8σ2=Qn-29F=Vσ210F=44.05117λ=4.45α=0.05。F=44.05>4.45H0∶b=0。F=22.13117λ=4.45α=0.05。F=22.13>4.45H2∶b=0。3、CODcrCODcrCODcr34。·021·36920119·Vol.36No.9Sep.20113CODcrCODcrmg/LCODcrCODcr1213.730.4-18.3%2283.328.9-1.6%3213.529.7-17.1%4326.139.4-10.4%5605.537.223.5%6527.243.68.8%77011.459.48.2%86210.857.14.1%95013.466.9-14.4%10345.336.4-3.4%11304.834.5-7.0%12384.533.46.4%1337431.58.0%14467.544.71.4%15345.135.7-2.4%16468.950.0-4.1%178216.478.22.4%185710.957.5-0.4%19479.451.8-4.9%4CODcrCODcrmg/LCODcrCODcr1223.831.1-17.1%2313.630.31.2%3294.533.9-7.8%4346.441.5-10.0%5626.341.120.2%6577.244.712.0%76811.461.64.9%86010.457.62.0%9346.541.9-10.4%10434.935.59.6%11336.140.3-10.0%12424.835.19.0%13354.132.34.0%14334.433.5-0.7%15334.935.5-3.6%1626431.9-10.2%17418.248.8-8.6%185513.168.5-10.9%196811.461.64.9%CODcr20%1820%。CODcrCODcrCODcrCr6+。41.CODcrCODcr。2.CODcrb35aCODcr。3.CODcrCODcrCr6+。1.M.2006210223.2.CODcr、CODMnBOD5J.2003164.·121·
本文标题:地表水高锰酸盐指数与化学需氧量相关关系研究
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