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8419898ENVIRONMENfALCHEMISTRYVol。8,No。4August1989FertoneFll(l)()FerronFe(I)Fe(a)、Fe(b)Fe(c)。Fe(,Fenn,Fe(b),Fenn,eF(c),Fern。Fe(l)(I)。,,Fe(b)Fe(e),Fe(a),Fe(a)/Fe(c).OH/F,Fe(a),Fe(b),,eF(a)/Fe(c)。FerronFe(I)。F。(l),Fe(l).,。Ferron`,2,’。shtHem’Al(111)lA(a),lA(b),lAc()。MurPhy「。’1975Fe(l)、,.、`.’.eFltolleF(l),eF(“),Feb(),Fe(c).Ferorn,785,50lNH\l2|H|、O)/A.,,.storm〔7’Ferorn:11:3,FeA,Fe(HO)A,FeA,Fe(OH):A,FeA,Fe(OH)A,lgK,=8.6;7。9.Noirta【“’(OH)。19:==5.,lgxs=。`、ōù.`2ù、___、!、/oH_/’OH\N11!i_t6HH`0H’-F“rn,PKF“rrQ,pH,,pH45。Fe()Ferron,F。()Fe(a),Fe(b),Fe(e).1.(1)0.2%Ferron:78,,.(2)lx“M:%),Hcl(i:1)NO。,,pH.7,,pH1.65.(3)Fo1C3:Fc1C3·6H:o,Ferron.(4):FeCI。,NoHCo。,oFe(),。.IM.,.2.l()50ml,Zmll(:1).(2)4m%,.(3)smleFrorn,.(4)`,.(5),,,,,。.(6)2h5,103oh.1FerxO”10`M,,.pHS,6oonm,,,0.997.6O0nm,,.,,eFrr。,,.F“rorn,30h.lpH,l4:FerronFe(I)Ferron.1FerronTablGStandardabsorbaneeofferrieferroncomPlexes(1。“,M)…::::::J::::::j:::::j:::10::::;:r。5。.55F5」.0_/、0,Fe(a)r(xlo-`)241FerronFig.1StandardeurveofFef`rron-eomPlexes2F19。2Determinationoftotalironvstime2.FerronFerronFe(111),,(111),,(a2).12imn,(l)Ferorn。pH,,pH12。。,3.Fe(l),2b.()eFr。,Fe(l).:Fe(a),Fe(b),Fe(e).(l),O.H0.Fe(l)Fe(a),Ferorn,。,,Fe(b),Fea()+Fe(b)。Fe(T)Fe,ronFe(e):Fe(e)Fe(T)〔Fe(a)+Fe(b)〕(2)Fe(T).Fec()。.Fec(),Ferorn,,,,F“orrn,R,Fe(c),.Fe(b)Fe(a)Fe(c),,Ferorn,2h3,Forron,,.,.,F,43%.Fe(c),.Al(b),5090%,〔。’.,F。(b)Al(b),F)Al(l),.Al(b).,OH/Fe,Fe(b)i,Fe(a)Fe(c).Fc(。),Feb(),Fec().:、OH/F,、、.,,.,,Smml,:(1)Fe(H:0):++OH=Fe(H20),(OH)++H:0(3)(2),,2(FeoH)+=F。:(oH)+(4)ZFe:(OH)+20H==Fe;(OH):+(5)n〔Fe(OH)〕2={〔Fe(OH)〕2。()Fes++,oHFe.(OH),(7)(3)n〔Fe(oH)〕’+、FeooHFe(oH),(。m)(B)Fe,(oH)””’,F。。o,(oH)””’+,F000HFe(oH):(am)(。),3,,:(1),,Fl).(2),,,.Y.Fe(a).(3)Fe(b),,Pe(b),Fe(c),。(4),.OHl2.134:FerronFe(I)—~—--.——`~——-_,sood;’oH/Fe2..IA(b)Fe(b).Al(b)o,Fe(111)15d4.85.5,l’W。F。(b)0.16。2.Ferorn,FerronO。028Fe(!11):OH/Fe=1.5,:,0.IMZh.,”,,.OHIFe=0.4:24h.,,OH/Fe=1.0.s0.c2、`àh8:5,125h_。z,`==,·5288hr.0,`ǎ、à234(h)OHIFe=2.0~J`~~.,23453。。IMFec134(OH/Fe=1.5)F19.3Effeetofagingtimeh()OH/Feo.IMFe(I)F19.4EffeetofOH/FeZeF(b)AI(b)FerronTable2Comrisonoftherea`tioneonstantsforFe(b)andAI(b)Fe(b)(0.IMFeCI,)AI(b)(o5x20`M)OH/Fe()〔)OHA/l()*o054ùbsóó5250282425881。5l。5l。51。51。5D。1570。1550。119O。0280。0001。361。36231。36961。,61681。36288Al(b)〔9〕5。OH/Fe,Fe()BOH/FeF。(l).4。.IMFe(l)OFe0.4,.10,1.5,2.0.24h,。OF。,,,Fe(a)Fe(b).,oH/Fe,Fe(a)/Fe`e)1.0(h)5OH/Fe0。IMFe(I)Fe(b)F19。5ConcentartionofFe(b)atdifferontoH/Fevstm。8。.IMF。(l)Table31〕i:tributionofferrspoeiesatdiferentagingtimeOH/Fe1~2(h)7~8(h)24~2sh)(){,2。()2g()95、547492.32{7。}。,。。9.2963.31.94.285`70.003、21ǐ.41Fe)Fez)Fe)e,:{:;FCa)Fe〔b)Fe`c)66.07107123。22.5C37,O3482Fe(’Fb){·F。(c)F。(al20Fe(bFee。40.1825.8933.93389151346、4338,21804537537.503。7558.753.500.00,0253442、963280G。9620.365771071.295。7175。0019,230.QO871`~`.....,.,.`....`,,~.~...,...,...,..,~,~.~.,...~~~..`.~-.,.,.,,..oH/FeOH/Fe.Fe(b)OH/Fe,dFe(c),Fe(a)1224h.3.。Fc(a)Fe(c)oH/F。,OH/12.Fe(a、F。(c)。4o.IMF。(),}/FeTablo4Di:tributi。。off。:ric:peec;。tiffercntOH/Feratios=OH/Fe.63C4291.056441.2736640.6217,74`ùA`O`17Fe(a)/Fc(T)Fe(c)ZFe(T)Fe)Fe(e)4.881,85OH/Fe2.。,,,.oH/Fe2.32.5,,-6.X`”,、OH/Fe、、.stumm““。OH/F。0.1、FeQ-OII,OH/Fe2.3,Fe(oH)、m),“FCooH.6oH/Fe=0.1(6a)OH/F。=3.0(6b)x,}。FeOOH。dFcooH。b.4:FerronFe(l),MurPhy’”’.6F19OH/Feo.IMFeC13X.a.OH/Fe.01X.b.OH/Fe。。3X.eXraydiffraetiondiagramsofferriepreeipitat`5withdifferentOH/Fea。OH/Fe=0.1,yellowPreeivitate,b,OH/Fc=3.0,borwneeipitate1.FerronFe(l),Fe(l)Fe(a),Fe(b),Fe(e).Fe(a),Ferron;F。b(),Ferron,Fec(),Ferron。2.,.Fe(a)24h,Fe(b)Fe(c),Fe(a)Fe(c),.3.oH/Fe,Fe(a)Fe(b),Fe(b)Fe(e),Fe(a)/Fe(c)OH/Fe。Fe(111),,,.〔l〕,,1985。,5:185l〔2〕TangHX,tSummW,1087.WaterReseare,21:11512-〔3〕DvaenportWHetal.,IO49.A1.Ce.,21(6):720711〔`〕SmithRW,HemID,。69.Geo09eaS“r,e,WarerS“ppPaper2527D〔“〕MuyP,PosnerM,QuirkJP,1975.Aust.J.SoilRes·,13,19201〔6〕,1055。,8(2):146〔7〕StomrARandaLnuirFJ.,1061。ActahCeicaSead.,15:17651771〔s〕NOrtT,1057。A.Aead.Sci.Feeae,Ser.A,se〔。〕ithRW1070。Eilbriu。AluuHdorxComplexes,in《NOne1Ubdu,SystemaNturalWater,34〔。〕DomJ,2078.JCo。da”dleraeeSee”ee,e(!):15417。〔11〕MrphPJ,PogoerAMandQurkJP.197c.J.Co。daeraeeSei.8se(2):28429188,19.DETERMINATIONOFPOLYMERICFe(l)SPECIESBYFERRONCOMPLEXATIONTIMEDSPECTROPHOTOMETRICMETHODTiaBaoZeTa9Ho”gxi(R`。arehCentrforEeoEnviromenta!Sciene,AcademiaSiea)ABSTRACTAferroneomplexationtimedspoetroph`·tomotriemethodwasusedtoeli-fytheaquoousspeeiesofFe()intothroeeategorieswhiehrresentedtheirdifforentextentsofhydroly:15andpolymeri:ation,:espeetively.Fe(a)ineludedthesimplemonomerieandoligomeriespoeioswhichreaetodalmostin,tantlywithforron。Fe(b)appearedtoineludethet:ansitionallowpolymeriespoeieswhiehr。。etedwithferrongradually.Fe(e)eonsistedofmorestablehighpo!y-merisPceieswhiehdidnotreaetwithferronbasieally。ExperimentsshowedthatFe(l)hydrolyZedandpolymerizedraplythanAI(l).Aftertwowoeksaging,solutionapproaehedtoap,ed。eqi-birumeondition.Fe(b)transformedintoFe(e)anddisaPPered,Fe(a)remaid1tsioitialportion,andFe(a)/Fe(e)raiot。。dedtoafixodvalue。WhentheoH/Ferotiowasraised,theFe(a)deerca、cdondtheFe(b)inereasgi-。。ntly,thenthoFe(a)/Fe(e)ratioatpseud。。quilibriumafteragingti。。alo