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ؽ?gu)Uˮ̎g(sh)
(li)Դ:̩{(ln)h(hun)Ƽ޹˾ | l(f)r(sh)g:2018-8-6 | g[Δ(sh)

  ؽ?gu)Uˮ̎g(sh)ľCϷ


늻W(xu)ķ(du)ٺͷǽٱM(jn)bo(h)@ijЩµ|(zh)һNˇ^(gu)鱣C僮a(chn)Ʒ|(zh)ʹ僌Ӿƽ⻬^cwι̽Y(ji)ϣǰ僼ϵ(PƤ)صϴɃ僺僼ĸҺϴɃһa(chn)^(gu)бȻų像UˮM(jn)像Uˮ̎ؽ?gu)Uˮ̎


像Uˮ̎һNyԏصҸ(f)sĻؽ?gu)Uˮ̎ˮ̎횸(j)像Uˮˮ|(zh)ˮca(chn)šla(chn)ؓ(f)cˮʽؽˮ̎ˮ|(zh)(f)sɷֲ׿к軯Ar(ji)t~\kyȵؽȾ^Щ°»ͻ׃Ą|(zh)(du)ΣO


像Uˮ̎Ҫᘌ(du)ƯϴUˮgUˮ僼ϴUˮˢϴƺ͘OďUˮԼڲ“ܡð©”a(chn)ďUˮ߀ЏUˮ̎^(gu)ˮŷԼ(yn)ҵˮ像UˮȾh(hun)ҪЃɂ(g);һ(g)ٝȸߵ像UҺŷһ(g)(du)^͵像Uˮ(ҪϴUˮ)ŷš


像Uˮ̎ĿnjUˮекж|(zh)Էx̎ʹж|(zh)׃ɟo(w)



ؽ?gu)Uˮg(sh)ĬF(xin)


W(xu)

W(xu)ʹUˮгܽB(ti)ؽD(zhun)׃?yu)鲻ˮؽٻķкͳȡ?/span>


кͳ


ںؽٵďUˮмAM(jn)кͷ(yng)ʹؽɲˮĚʽԷxкͳ(jin)Σdzõ̎Uˮ(sh)`CڲҪעŽc(din)[1](1)кͳUˮpHֵҪк̎ſŷ;(2)UˮгжNؽٹ棬(dng)UˮкZnPbSnAlȃԽٕr(sh)pHֵƫߣܽAҪ(yn)pHֵ(sh)зֶγ;(3)UˮЩx磺uֲ|(zh)пcؽγɽj(lu)Ҫк֮ǰ轛(jng)^(gu)A(y)̎;(4)ЩwС׳toɡ



턩ʹUˮؽxȥķcкͳă(yu)c(din)ǣؽܽȱܽȸҷ(yng)pHֵ7—9֮g̎ďUˮһ㲻кȱc(din)[2]wСγzw;턩ˮК򻯚wa(chn)Ⱦ˷ֹȾ(wn)}Ӣ(gu)W(xu)о˸M(jn)̎ďUˮxԵļxӺһؽx(ԓؽٵxƽȱҪȥؽȾ|(zh)ƽȸ)ڼM(jn)ȥؽٵȏUˮеؽٵܽ⣬@ӏUˮԭеؽxӾͱM(jn)ȥؽxȷx(li)ͬr(sh)ֹкw򻯚ɺxӚ(wn)}


߀ԭ̎


W(xu)߀ԭ


像UˮеCrҪCr6+xΑB(ti)UˮͶ߀ԭCr6+߀ԭ΢Cr3+ͶʯһNaOHa(chn)Cr(OH)3xȥW(xu)߀ԭ像Uˮ瑪(yng)õg(sh)֮һ҇(gu)Vđ(yng)ãԭ(jin)ܴܳˮ͸ߝȏUˮ_(j)Ͷ߀ԭIJͬɷ֞FeSO4NaHSO3FмSO2(yng)ûW(xu)߀ԭ̎CrUˮAr(sh)һʯUࣻNaOHtˎM(fi)øߣ̎ɱ@ǻW(xu)߀ԭȱc(din)


Fw


Fwg(sh)Ǹ(j)a(chn)Fwԭl(f)չ(li)ġںCrUˮм^(gu)FeSO4ʹCr6+߀ԭCr3+, Fe2+Fe3+{(dio)(ji)pHֵ8ʹFexӺCrxӮa(chn)ͨ՚┇貢ﲻ෴(yng)γtFw͹ˇgЪʽBm(x)ʽFwγɵ໯W(xu)(wn)ԸߣڹҺxÓˮFw̎CrUˮ؄emںؽxӵ僻ϏUˮ҇(gu)(yng)Fwѽ(jng)Ўʮvʷ̎ďUˮ_(d)ŷŘ(bio)(zhn)ڇ(gu)(ni)價I(y)Б(yng)^


FwO(sh)了(jin)ΡͶY(jin)a(chn)Ⱦȃ(yu)c(din)γFw^(gu)Ҫӟ(s70z϶)ܺ^ߣ̎}ȸв̎Hgͽj(lu)Uˮȱc(din)


늽ⷨ


늽ⷨ̎CrUˮ҇(gu)ѽ(jng)жʮĚvʷȥʸߡo(w)Ⱦؽٿɻõȃ(yu)c(din)s30NUˮҺеĽxӿM(jn)늳e늽ⷨһN^̎g(sh)ܜpܻCuAgCdȽ٣ё(yng)ڏUˮ^(gu)늽ⷨɱ^һ㽛(jng)s늽⽛(jng)(j)Ч^á


܄ȡx

܄ȡ[4]Ƿx̓|(zh)õķҺһҺ|Bm(x)xЧ^áʹ@Nr(sh)Ҫx^xԵȡUˮؽһ(yng)xӻxʽڣԗlcȡl(f)j(lu)Ϸ(yng)ˮ౻ȡЙC(j)ȻډAԗl±ȡˮʹ܄ѭh(hun)@Ҫȡr(sh)עxˮMȡ^(yu)ԽȻ܄ȡ^(gu)еʧ^(gu)ԴĴʹ@Nһԣ(yng)ܴܵ



Ī(d)ؽY(ji)(gu)ȥؽxӵһNЧ̎ؽ?gu)Uˮлֲ̿ᡢʯǘ(sh)֬ȡ̿b了(jin)ڏUˮБ(yng)ÏV̿Чʵ̎ˮ|(zh)y_(d)Ҫһ像UˮA(y)ֲ̎|(zh)DZ^r(ji)Ѹֲɸֲ(sh)֬̎CrNiUˮгɹ(jng)(yn)P(gun)оǼؽxӵǘ(sh)֬“(lin)؏(f)ʹ10](mi)@[5]øԵĺʯؽ?gu)Uˮ(du)Pb2+Hg2+Cd2+кܺõ̎Uˮؽٺ@ˮCŷŘ(bio)(zhn)īI(xin)(bo)ÓʯҲһNõճVXÓʯԗlŒ(du)Cr6+ȥ_(d)99%ˮCr6+ڇ(gu)ŷŘ(bio)(zhn)Ќ(sh)H(yng)ǰ


Ĥxg(sh)

Ĥxø߷еxԁ(li)M(jn)|(zh)xļg(sh)늝BB͸Ĥȡ^(gu)Vȡ늝B̎價I(y)Uˮ̎UˮMɲ׃ڻزʹCu2+Ni2+Zn2+Cr6+ȽxӏUˮm늝B̎гO(sh)B͸ѴҎ(gu)ģZnNiCrƯϴˮͻؽ?gu)Uˮ̎÷B͸̎像Uˮ̎ˮԻã(sh)F(xin)]·ѭh(hun)ҺĤ像Uˮо(bo)ܶ࣬ЩI(lng)ҺĤɻA(ch)ՓоM(jn)뵽I(y)(yng)A҇(gu)͊WҺĤg(sh)̎ZnUˮҲ(yng)AuUҺ̎[7]Ĥȡg(sh)һNЧo(w)Ⱦķxg(sh)ԓ(xing)g(sh)ڽȡкܴM(jn)չ


xӽQ̎

xӽQ̎xӽQxUˮк|(zh)ķ(yng)õxӽQxӽQ(sh)֬ʯȵxӽQ(sh)֬zͺʹǰx(f)sɱڑ(yng)ܴܵxӽQǿQƄ(dng)xc̎Һеxͨ^(gu)xӽQ(li)(sh)F(xin)Ƅ(dng)xӽQĄ(dng)xgȲͽQϵĹܻ(du)xӵH(sh)rxȱٱQxӽQQp@Nϵđ(yng)Խ(li)Խ࣬(rn)[11]ÓʯҪɷֵճˮÛԺȱe^(qing)xӽQ(jng)xӽQ(qing)Džs^yȻʯڌ(du)ؽ?gu)Uˮ̎(rn)иă(yu)c(din)ʯ[9]ǺW(wng)ܽY(ji)(gu)X}V(ni)ȱeЪ(d)صxӽQо[10]ʯďUˮȥؽxӵęC(j)(sh)rxӽQpSxӽQȡռҪλNaCl(du)ȻʯM(jn)A(y)̎xӽQͨ^(gu)xӽQ^(gu)̣Uˮؽxӝȿɝs30ʯȥ~NaCl^(gu)Уȥ_(d)97%ɶQѭh(hun)Ҍ(du)~ȥʲ͡


̎g(sh)


ڂy(tng)гɱ(f)s(du)ڴ͝ȵкȾy̎ȱc(din)(jng)^(gu)̽оg(sh)ܵ˂ҕSؽٶ΢оM(jn)չ\g(sh)̎ؽ?gu)UˮʬF(xin)l(f)չ(sh)^(j)ȥؽxӵęC(j)ͬɷ֞ﻯW(xu)Լֲޏ(f)




ؽ?gu)Uˮg(sh)չ


Sȫɳm(x)l(f)չ(zhn)ԵČ(sh)ʩѭh(hun)(jng)(j)坍a(chn)g(sh)Խ(li)Խܵ˂P(gun)עؽ?gu)Uˮĩ坍a(chn)ˇ|(zh)ѭh(hun)UˮõȾCϷAΰl(f)չδ(li)ؽ?gu)Uˮ팢ͻŽׂ(g)棺


(1)؞ѭh(hun)(jng)(j)ҕ坍a(chn)g(sh)_(ki)l(f)c(yng);|(zh)YԴD(zhun)ʺѭh(hun)ʹ;Դ^pؽȾĮa(chn)ȫ^(gu)̿Y(ji)ϏUˮCK(sh)F(xin)Uˮŷ


(2)ؽ?gu)Uˮ̎g(sh)ܶ\g(sh)Ǿ^l(f)չ?ji)ļg(sh)гɱЧߡɶȾȃ(yu)c(din)S򹤳̡W(xu)ȼg(sh)İl(f)չ͑(yng)иЧͶԵľNɹ\g(sh)ďV(yng)ṩl(du)ѽ(jng)Ⱦġh(hun)ɲֲޏ(f)g(sh)۵ͬr(sh)H˭h(hun)߀ԫ@һĽ(jng)(j)Ч


(3)Cһwg(sh)δ(li)像Uˮg(sh)ğc(din)像UˮNN價ˇܴHʹһNUˮԣ_(d)ЧˣC϶Ng(sh)c(din)һwg(sh)(yng)\(yn)


像Uˮ̎վš

 


像Uˮˮ|(zh)^xȡšǧf(wn)eÿһNˇضĿƅ(sh)Լ\(yn)еą(sh)ҪTĹˆTM(jn)ӛ


(sh)׃ֱӛQO(sh)Ƿ\(yn)УҲДO(sh)ϴr(sh)C(j)ϴЧ(j)ÿ찴r(sh)ӛ@Щ(sh)䰸l(f)F(xin)(sh)(j)(yng)r(sh)ԭ(jin)εĹϷ򼰕r(sh)“(lin)ϵҹ˾ۺ(w)T@Щϵԭ䰸


像Uˮ̎վճ„(w)


1.ˆT(yng)ÿՌ(du)像S܇gM(jn)Йz_Uˮռ罹~ҺW(xu)懡ЙC(j)ȾϵȲŷŵUˮվΪ(d)ռ̎ҺȝȸߵďUˮҲһŷţŷ


2ˆT(yng)ÿ_(ki)ʼǰ(du)O(sh)M(jn)м(x)ęz(du)@ڰl(f)F(xin)Ć(wn)}r(sh)磺ˮǷ©ˮ


3ˆT(yng)ԓע_(ki)O(sh)O(sh)\(yn)ОԄ(dng)ք(dng)\(yn)еO(sh)_(ki)C(j)Ҫ\(yn)в(dng)(hu)O(sh)ēp磺O(sh)\(yn)ǰAεyTǷ_(ki)òڛ](mi)ˮėl¿D(zhun)


4ˆTO(sh)\(yn)к(yng)֕r(sh)ӛO(sh)\(yn)Ѕ(sh)(du)O(sh)\(yn)РrM(jn)бO(jin)Юr(yng)o̎o(w)̎(yng)ؓ(f)؟(z)˅R(bo)


5ˆT(yng)ÿյO(sh)ϴ(du)ÿ(g)̎혋(gu)ϴr(sh)C(j)Дϴˮȑ(yng)ȫCO(sh)L(zhng)ڷ(wn)\(yn)СdzVĤͷB͸ĤϴЧֱӛQˏUˮĻʺͳˮˮ|(zh)ԼĤʹÉ


6.ˆT(yng)(du)ÿ(xing)J(rn)м(x)Դ_ϵy(tng)(wn)\(yn)С绯W(xu)ϵy(tng)t߀ԭr(sh)gҪˮϵy(tng)A(y)̎ϵy(tng)ÿϴһε


7ˆTÿ°r(sh)P(gun)]Uˮ̎O(sh)(du)ȫ\(yn)еO(sh)Uˮ̎վ(yng)ԓˆTM(jn)ȫIJO(jin)CO(sh)(wn)\(yn)


8.Uˮ̎܇gl(wi)C܇gĭh(hun)l(wi)


9ˆT(yng)(1(g)»2(g))(du)O(sh)ͣC(j)\(yn)B(yng);So(h)ԱC̎O(sh)ܲg\(yn)

 
 
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