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1. Uhlu olubanzi lwemingcele yokusebenza,isixazululo sokugeza esizinzile,okulula ukusilawula.
2. Ukuvikelwa kwemvelo, okungenayo i-F, akunangozi empilweni yomuntu.
3. Ukwenza ngcono ubulukhuni nokukhanya kwamaphrofayili e-aluminium ngemva kokwelashwa kokuvala.
FL-09 (Okuqinile) | I-FL-09 (uketshezi) | Amanzi acwebile 5~6g/L |
5~6g/L | 5~10g/L | Ibhalansi |
Ni | pH | Izinga lokushisa | Isikhathi | Ukusetshenziswa |
0.8~1.4g/L | 60±5℃ | 1μm/1.2min | 1 | 0.9~1.3kg/T |
1. Nquma ukugxila kosuku lwansuku zonke, lwenze luguquguquke kancane.
2. Lawula i-pH ngokungeza i-FL-09(uketshezi) noma nciphisa i-acetic acid, gcina inani le-pH phakathi kuka-5.3 no-6.5.
3. Amapayipi okushisa kufanele amiswe odongeni lwangaphakathi lokugeza hhayi ngaphansi, ngaphandle kwalokho imvula izovala idivayisi engase ithinte umshini wokushisisa futhi engafanele ukuhlanza imvula.
4. Ukuze unciphise ukungcoliswa kwesisombululo sokugeza okugeza, lawula ikhwalithi yamanzi kanye ne-pH yokugeza okugeza ngokuqinile, i-pH ayikwazi ngaphansi kuka-4.5.
Isengezo Sokuvalwa Kwezinga Lokushisa Esimaphakathi sivalwa nge-polybag, inethi engu-5kg ngayinye kanye nama-polybag angu-4 ebhokisini, inethi engu-20kg ngayinye.Ivikelwe ekukhanyeni endaweni eyomile.
Usinki wokupholisha ngezinga lokushisa eliphansi--indlela yokuhlola
Ama-reagents adingekayo: Isixazululo esijwayelekile se-1N NaOH ②1% inkomba ye-phenolphthalein ③ Potassium
Ukunqunywa kokuqukethwe kwe-nickel ion (Ni2+).
1. Izinyathelo zokuhlola.
Dweba kahle u-10mL woketshezi lukasinki ebhikeni elingunxantathu elingu-250mL, engeza u-50mL wamanzi, u-10mL (pH=10) we-chloramine buffer, inani elincane elingu-1% i-violetine, bese unyakazisa kahle.Titrate ngesixazululo esijwayelekile esingu-0.01mol/L EDTA kuze kube yilapho isixazululo sishintsha sisuka kokuphuzi siye kokunsomi njengendawo yokugcina, bese urekhoda ivolumu yokusetshenziswa engu-V.
2. Isibalo: I-Nickel(g/L)=5.869 × V × C
V: umthamo wesixazululo esijwayelekile se-EDTA esidliwe ngamamililitha (mL)
C: i-molar concentration yesisombululo esijwayelekile se-EDTA (mol/L)
Ukunqunywa kokuqukethwe kwe-fluoride ion (F-).
1. Ukulungiswa kwesisombululo se-F-standard
① Isixazululo esijwayelekile esino-F-concentration ka-5g/L: Isisindo esinembile esingu-11.0526g NaF (I-Analytical Reagent, yomiswa kuhhavini engu-120°C amahora angu-2, gcina kumshini wokwenza izinto ngebhodlela lesisindo ozosetshenziswa, olunembile kufika ku-0.0001g uma ukala) ukuncibilika Ngamanzi amancane ahlanjululwe, dlulisela ku-flask ye-volumetric engu-1000mL, hlambulula uphawu, futhi unyakazise kahle.
② Isixazululo esijwayelekile esino-F-concentration ka-0.1g/L: I-Pipette 10mL yesisombululo esijwayelekile esino-F-concentration ka-5g/L kuflask yevolumu engaphezulu ibe yiflask yevolumu engu-500mL, hlambulula kumaki, bese ugcina ebhodleleni le-polyethylene.
③ Lungiselela izixazululo ezijwayelekile ngokugxilisa kuka-F ka-0.2-1 g/L njengoba kuchazwe ngenhla.
2. Ukulungiswa Kwesixazululo Sesibhafa Esiphelele Se-Ionic Amandla (TISAB)
Thatha cishe u-500mL wamanzi acwecwe uwafake kubhekha engilazi ehlanzekile engu-1L, engeza u-57mL we-glacial acetic acid, bese wengeza u-58.5g we-sodium chloride no-12g we-sodium citrate ukuze ulungise futhi uncibilike ngokuphelele, bese usebenzisa i-sodium hydroxide ehlanzekile ngokuhlaziya lungisa ku-pH=5.0~5.5, nciphisa ku-1L ngamanzi acwecwe.
2. F- Umdwebo wejika elijwayelekile
① I-Pipette 2mL yesisombululo esijwayelekile esinokuhlangana kuka-0.1g/L kubhekha lepulasitiki elingu-100mL, bese wengeza isisombululo sebuffer se-TISAB esingu-20mL, sifake umazibuthe, sinyakazise ku-stirrer kazibuthe, faka i-electrode ye-oxygen kanye ne-electrode eyireferensi ngokulandelana, Ngemva kokunyakaziswa kwe-electromagnetic 3min, melela 30s, futhi ufunde ukulingana okungenzeka Ex;
②Sebenzisa indlela efanayo ukuze ulinganise inani elingaba khona elingu-Ex lesixazululo esijwayelekile okugxilwa kwaso kuka-F kungu-0.2~1g/L, futhi uhlunge ukugxiliswa kusukela phansi kuye phezulu.Ephepheni legrafu, dweba ijika elijwayelekile le-EF elinamandla okuthi E njengohlelo kanye nokugxilisana kuka-F njenge-abscissa.
I-pipette ngokunembile u-20mL woketshezi lukasinki ebhekhani engu-100mL, engeza u-20mL wengqikithi yesigcina samandla e-ionic (TISAB), gudluza ku-stirrer kazibuthe imizuzu emi-3, bese ukala ngokuqondile umehluko ongaba khona nge-electrode eyi-fluorine.Thola okuqukethwe kwe-fluorine okuhambisanayo m kumdwebo we-electrode ongase ube khona we-fluorine okuqukethwe.
Isengezo sokuvala izinga lokushisa eliphakathi | I-Nickelion | PH | izinga lokushisa |
0.8-1.4g/L | 5.3 ~ 6.5 | 60±5℃ |