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1. Kuramba kwakanakisa kutsvina uye yakanaka buffering kugona kune acid uye alkali.
2. Mushonga wacho une zvakanakira nyore kushanda, zvakasiyana-siyana zvekugadzirisa zvirongwa, hapana chikonzero chekugadzirisa pH kazhinji.
3. Dzivirira kuti chisimbiso chisaitika.
4. Mushure mekuiswa chisimbiso, inogona kuvandudza kuoma kwepamusoro uye kupenya kwealuminium profiles.
Cold Kuvhara Kuwedzera | Deionized mvura |
5~5.5g/L | Balance |
Ni2+ | F- | pH | Tembiricha | Nguva | Kushandiswa |
0.9~1.3g/L | 0.4~0.6g/L | 5.5~6.5 | 22 ~ 28 ℃ | 1μm/1.3min | 0.9~1.5kg/T |
1. Sarudza kuwanda kweNi,F uye pH, ita kuti zvive mukati mehuwandu hwemaitiro ekugadzirisa
2. Regulate pH nekuwedzera dilute acetic acid (dilute hydrofluoric acid) kana dilute sodium hydroxide (dilute ammonia),chengeta pH kukosha pakati pe5.5 ne6.5.
3. Kudzikisa kusvibiswa kwemushonga wekugezesa wekugezesa, chengetedza kunaka kwemvura uye pH yekugezesa yekugezesa zvakasimba, iyo pH haigone kuita isingasviki 4.5.
Cold Sealing Additive yakavharwa nepolybag, 5kg net imwe neimwe uye 4 polybags mubhokisi, 20kg net imwe neimwe.Kudzivirirwa kubva kuchiedza munzvimbo yakaoma.
Kutsunga kwenickel ion (Ni2+) zvirimo
1. Matanho ekuongorora.
Nyatsodhirowa 10mL yemvura yekunyura mu250mL triangular beaker, wedzera 50mL yemvura, 10mL (pH=10) yechloramine buffer, shoma shoma ye1% violetine, uye zunza zvakanaka.Titrate ine 0.01mol/L EDTA yakajairwa mhinduro kusvika mhinduro yachinja kubva kuyero kuenda kune yepepuru painoperera, uye nyora vhoriyamu yekushandisa V.
2. Kuverenga: Nickel(g/L)=5.869 × V × C
V: vhoriyamu yeEDTA yakajairwa mhinduro inopedzwa mumamililita (mL)
C: Molar concentration yeEDTA yakajairwa mhinduro (mol/L)
1. Kugadzirira kweF- standard solution
① Yakajairwa mhinduro ine F-concentration ye5g/L: Yakanyatso kuyera 11.0526g NaF (Analytical Reagent, yakaoma muovheni pa120°C ye2h, chengeta mudhizaini ine huremu bhodhoro rekushandisa, yakaringana kusvika 0.0001g kana uchiyera) kunyunguduka Muchidimbu chemvura yakasvibiswa, tumira kune 1000mL volumetric flask, dilute kune chiratidzo, uye zunza zvakanaka.
② Mushonga wakajairwa une F-concentration ye0.1g/L: Pipette 10mL yemhinduro yakajairwa ine F-concentration ye5g/L muvhoriyamu iri pamusoro muflask ye500mL yevhoriyamu, dilute kune mucherechedzo, uye chengeta mubhodhoro repolyethylene.
③ Gadzirira mhinduro dzakajairika neF-concents ye0.2-1 g/L sezvatsanangurwa pamusoro.
2. Kugadzirira kweTotal Ionic Strength Kugadzirisa Buffer Solution (TISAB)
Tora inenge 500mL yemvura yakagayiwa woiisa mubeaker yegirazi yakachena 1L, woisa 57mL yeglacial acetic acid, wobva wawedzera 58.5g yesodium chloride uye 12g yesodium citrate kugadzirisa nekunyungudika zvachose, wobva washandisa analytically pure sodium hydroxide ku. gadzirisa ku pH = 5.0~5.5, dilute kusvika ku1L nemvura yakasvibiswa.
3. F- Standard curve kudhirowa
① Pipette 2mL yeyakajairwa mhinduro ine 0.1g/L mu100mL yepurasitiki beaker, wobva wawedzera 20mL TISAB buffer solution, isa magineti, kurungidzira pamagnetic stirrer, isa okisijeni electrode uye referensi electrode zvichiteerana, Mushure mekuputika kwemagetsi kune. 3min, mira makumi matatu, uye uverenge iyo yakaenzana inogona kuitika Ex;
②Shandisa nzira imwe cheteyo kuyera kukosha kweEx yemhinduro yakajairwa iyo F inosvika 0.2~1g/L, uye rongedza kusungirira kubva pasi kusvika kumusoro.Pabepa regirafu, dhirowa EF yakajairwa curve neinobvira E seyakarongeka uye F concentration seiyo abscissa.
4. Kutsunga maitiro
Chaizvo pipette 20mL yemvura yekunyura mubeaker 100mL, wedzera 20mL yeionic yakazara simba buffer (TISAB), kurunga pamagnetic stirrer kwemaminetsi matatu, uye kuyera zvakananga musiyano unogona kuitika mv nefluorine electrode.Tsvaga inoenderana nefluorine zvirimo m mune yefluorine zvirimo-inogoneka mutsauko wakajairika electrode dhayagiramu.
Process parameters
KutonhoraKuisa Chisimbiso Kuwedzera | Nickelion | Fluoride | PH | tembiricha |
0.9~1.3g/L | 0.4 - 0.6g/L | 5.5-6.5 | 22 ~ 28℃ |