1、ICS65.080G20Water-solublefertilizers-Determination of total nitrogen,phosphorus and potassium content2010-12-23 2011-02-01 DtB$BII*;fijlitJJIt)ET7kmHUl1,.,fIlJ1f:JI?9!tl)ElWiAjJ7t0*;fijltmfIFfUlJrmf*7kmH*1-,tit.,fIlJ1f:JIIW?!i!tl)E02$Btt5ImJti4=ljtlxflj:x;j.:p*xflj:IWMffl&/FPJY-lWoLttaWlIWi3lfflxflj
2、:,;utaWlIWJtfi*mffl.:p*Xflj:o L/FttaWlIWi3lfflxflj:,jtjUifiJtfi*C E1.1ISEFf:ffIW1ji)mffl.:p*xflj:oGB/T8170if-m:fli)J!tl13llfdalWlRU)EGB/T8572tlU*1-,1l1f:JIIW?9!tl)EitlE)E7tHG/T 28431tHr:,fb1t?H1T1It ffl;fijlt)EmUl,;fijltmUl,iA1fJJmUlmlR1fJJmUlNY/T887Ulf*H*1-*IW?9!tl)E3,ia.*.aJjm3.1.tIiJiil!(1Jflll!)
3、3.1.1mumtEIf1l-mt ffl)E1litlil1H:B5,1Iitltfj;tEtt1l-mt:B5liI1iJVt,tEt&it-001t1fJJfftEl,fflliHlrtJlrJ1j1t,:ffmI$t1l.1t,JAlfmUl itlo.I!&i&tEM.immUl,tEEi3 tr-5IEEi3 Mt&itmlRJflJfftEl,fflit.1tM;fijlt)EmUl)g)E,it.iA*FIW,1l1f:JIo3.1.2i:it1flJ*;fijltEFfffliAJflJ,7kmUllWreiIiJJ,tE*ttreiIiJJjJ7tMMitHG/T2843
4、1W)Eo3.1.2.1imo3.1.2.2o3.1.2.35C7kZ.o3.1.2.4:/J.:p250 pmo3.1.2.5:/J.:p250pmo3.1.2.6imHfIlJ03.1.2.7:li7ki.m03.1.2.8)EitCCu:50%,Al:45%,Zn:5%):/J.:p850 pmo3.1.2.9t&it-001tJflJ:1 000 gimHfIlJC3.1.2.6),50 g:li7kimC3.1.2.7)ff1iJfm,M!llIHmMo.25 mm:rL;fiAgm,jl0A 1gC3.1.2.4)#YE?H&ito3.1.2.10it.1tMmUl:pCNaOH)
5、=400 g/Lo3.1.2.11!t.1tM;fijlt)EmUl:cCNaOH)=O.5 mol/Lo3.1.2.12immUl:c1/2CH2S04)J=0.5mol/Lo3.1.2.13Ei3tr-5IEEi3Mr&itmlRJflJ:f$JOC0.10 g Ei3tr0.05 g 5IEEi3M,fflY-:JI5C7kZ._C3.1.2.3)?XmfBE,ffljt;mJJ 100mL,t&?:J03.1.2.14JrzpHia.3.1.3&H3.1.3.1-Jli:f)(:B.3.1.3.2i1iit!t:t400cP3l:iJifliJLrJHtf)lo3.1.3.3;bllH
6、Ii1)(.3.1.4!11.3.1.4.1it*tl9fb1J.rmf*-F&biX?tE,*II 100g,l/4JJtilli8Hi1fm.3HttlIHm:iio.50mmL9mc:!m-F&bmM,l:iJiN:ii1.00mm9m-r),tf!-tt:l:&,.Tfl!f,T:B9:t;7lf*-F&biX;bE,illi!*II 100mL,.Tfl!f,T:B9:t.3.1.4.2it*tl9lI.tI3.1.4.2.1-&*.tl9it*,ffi-.*:I:If*T235mgia-F o.5g-2g(*iJU 0.000 1g)Tr1t(llHItP1f9:t,1JoA 70
7、mL71,;b,t9!ia-F1tfB.rtt;b.llHI1)(t9!m&.:fHff3fJS1)(:B.T 500mL.=:jijmL 9:t1Jo A 50.0 mL iittni1t 7l(3.1.2.12)*U4$j-5$j7l!-ttmffilflj(3.1.2.13),.=:jijmLT1ltl1)(:B.7li&fi!.t.l/4Jr1t(1ltI)1fq1)(:B1ltIffi,1JoA20mLtt.1t1t7l(3.1.2.10),3f!lft1ltI.1ltl7l:iiiJJ 300mLlJ;j,mpHia(3.1.2.14)1!t.7l.1I1fr:l7l$j,jm:l
8、fD.ffitt91tl*1ltI.3.1.4.2.2*iU.tl9it*,ffi-.*:ft:lf*T235mg,m1fDl*:ft:lf*T60mgia-F o.5g-2g(*iJUO.0001 g)Tr1t(1ltI)1f9:t,1JOA70mL71,;b,t9!ia-F1tfB.1JoA3g1l-tt(3.1.2.8),l/4Jr1t(1ltI)1f*;b1ltl1)(L.1ltI:iili1JoA 20mLtt.1t1t7l(3.1.2.10)E.D.10min-N3f!lft1ltI,JtftB&7.1PJ3.1.4.2.1.3.1.4.2.3*.Y:.tl9it*,(ji.*:i
9、t:lf*T235mgia-F o.5g-2g(*iJUO.0001g)Tr1t(1ltI)1f9:t,imA o.5gli71iitt.f.iJ(3.1.2.7)*U10mLiitt.(3.1.2.l),fffiL*31tJlAlti4,.Tr1t1)(L,ifliJJttliiUt1g380C,1Joiitt.EJm20minE1.I:,r1t(1ltI)1f:ilffi.E1JOA70mL71.1ltI:iili1JOA 50mLtt.1t1t7l(3.1.2.10),JtfiB&7.1PJ 3.1.4.2.1.3.1.4.2.4*m!ItJ,.Y:.tl9it*,(ji.*:ft:lf
10、*T235mgia-F o.5g-2g(*iJUO.0001g)Tr1t(1ltI)1f9:t,1JOA 2grf!iHI1tlflj(3.1.2.9)*U10mLiitt.(3.1.2.1),fffiL*31tJlAlti4,.Tr1t1)(L,ifliJJtilffi.ll1g 380C,1Joia-Flt7l3G-:i!WG1J(EJ-E1.1:,r1t(1ltI)1f:ilffi.E1JOA70mL71.1ltI:iili1JOA 50mLtt.1t1t7l(3.1.2.10),JtftB&7.1PJ3.1.4.2.1.3.1.4.2.5*ii!f.,.Y:.tl9it*,(ji.*:
11、ft:lf*T235mg,m1fni.*:ft:lf*T60mgia-F 0.5 g-2g(*iJUO.0001 g)Tr1t(1ltI)1f 9:t,1J0 A 10 mL 71,;b,t9!ia-F1tfB.1J0 A 1.2 g t5t(3.1.2.5)*U7 mL i1i:.(3.1.2.2),D.5min,fffiL*31tJlAlti4.l/4Jr1t(1ltI)1f.Tr1t1)(L,ifliJJtilffi.ll1g 100C,1JotJlJJJHf:r:*:ltm-.mE1Jo 2min-3min.:ilffi.E1JOA 0.5 gli71iittnif.iJ(3.1.2.
12、7)*U10mLiitt.(3.1.2.1),14nl/4J:J1iIffi.Jl380C,:If*fr1t(1ltI)1f,YE1fP3lf7l:lfmlR.iitt.m20min)ff1.I:1J0,r1t(1ltI)1f:ilffi.E1JOA70mL71.2tm:i1W:bOA60mLtt$t1tfH1l(3.1.2.10)jr,jtfttv1RJ 3.1.4.2.103.1.4.2.6*m.,1im!I6JJ,.JJi.I-.Ji:itf$JljC(j1-1l*:fI:kT 235mg,lij!j1l*:fI:kT60mg89ia:-fo.5g2 g(fR1ifeO.0001 g)T
13、rl!f1t(tm)ff9=,:bOA10mL 7j(,3Ili9J,1tia:-fmffo:boA 1.2 g(3.1.2.5)fn7 mL(3.1.2.2),fit.ft 5min,fffi.t.*_m40rl!f1t(tm)ff.ftTrl!f1tf)(.t.,i.ijjti1i!ltJg100C,:bomMHf r:k:fl:mfAgi*s:bo 2min3 min,*pi1i!o:bOA 2gritfl1t:1fljC3.1.2.9)fn 10mL(3.1.2.1),fffi.t.*_m4,m.:i111io?XBrl!f1t(tm)ff.flTrl!f1tf)(.t.,7ti1i!
14、m,380C rl!f1torl!f1t:i1WfmWT3Ili9Jrl!f1tff,fiHiEffl*Jmr1lmtEorl!f1t60minsJ1:bo,fifrl!f1t(tm)ff*Pi1i!s:boA70mLJJcotm:i1W:bOA60mLtt$t1tmr1l(3.1.2.10)jr,jtfttv1RJ3.1.4.2.103.1.4.2.7A1iJE1ltmf)(,rl!f1tf)(89If(r,ia:-f89Hll!.tmPJ*)ffiGB/T857289JEtJ;t.3.1.4.31ltll)il-.JjjIjffltt$t1tfijftJEmr1l(3.1.2.l1)gJE
15、:i1:1:89m:1fIj$:ygJgo3.1.4.4si:it:bOia:-fjr,jtfttvIRJia:-fmr1l89?!i!tlJE03.1.5*I-.J,(ji(N)*:fI:wmt:fl:*(%),r1i:A(1)tt.:w=_(V_2_-_V_1)_c_X_0_.0_14_0_1X100(1)mc-ia:-f lk5!.l3ia:at1tffltt$t1tfijftJEmr1l89ttlt,1flill.Jg.$4ij7t(mol/L);V1-?!i!tlJEia:-fat1tffl tt$t 1tfijftJEmr1l89-f*fJt,1flill.Jg.7t(mL);V2
16、-5!.I3ia:at1tffltt$t1tfijftJEmr1l89-f*fJt,1flill.Jg7t(mL);O.01401-1.00mLtt$t1tfijftJEmr1lc(NaOH)=1.000mol/LJffJ89E891l89mt:fl:,1flill.JgE4ij.$(g/mmo1);m-ia:89mt:fl:,1flill.JgE(g)0JIj(1jl-ft?!i!tlJE*89.*1jl-m:Jg?!i!tlJE*,*f*Ii JJ/J,Sp;qill.03.1.6;ei.!F1jl-ft?!i!tlJE*89Xt-m:kTO.30%01RJ?!i!tlJE*89Xt-m:kTO.50%03.2ij:Q,WT1t&/8Hi3.2.1mumi1i!fn$t89mr,-fJE:I:ff,-f9=891l*T1lfn1l$t1toC89i9Jr,.$t1t*AgW1t*T1lo89jtT*lli89*o*TEE?!i!tlD?!i!tlo3.2.2iitlllJM3.2.2.1=$t1t(C02)-f*:lt/JT99.995%03.2.2.2$t(02)-f*:lt/J