Yuav Ua Li Cas Ntsuas Zinc Carbonate Purity rau Industrial Export Orders

Zinc carbonate purity yog qhov tseem ceeb rau kev lag luam xa tawm, vim nws cuam tshuam ncaj qha rau cov khoom lag luam, kev nyab xeeb, thiab ua raws li cov qauv thoob ntiaj teb. Cov impurities xws li cov hlau hnyav, sulfates, chlorides, thiab cov teeb meem insoluble tuaj yeem ua rau cov khoom tsis tsim nyog rau cov ntawv thov (xws li tshuaj thiab tshuaj pleev ib ce) lossis ua rau tsis lees paub ntawm kev lis kev cai. Rau cov neeg xa khoom thiab cov neeg yuav khoom lag luam, paub yuav ua li cas kuaj zinc carbonate purity yog qhov tseem ceeb los xyuas kom meej cov khoom zoo thiab ua tau raws li cov neeg yuav khoom.

 

Thawj kauj ruam hauv kev sim zinc carbonate purity yog los xyuas cov ntsiab lus zinc, vim qhov no yog thawj qhov taw qhia ntawm purity. Tus qauv txheej txheem rau kev txiav txim siab cov ntsiab lus zinc yog complexometric titration, uas cuam tshuam nrog kev sib cais cov qauv ntawm zinc carbonate hauv hydrochloric acid thiab titrating nws nrog tus neeg sawv cev chelating (xws li EDTA). Txoj kev no ntsuas cov zinc ions hauv cov qauv, tso cai rau kev suav cov zinc carbonate purity (vim zinc carbonate muaj qhov sib piv ntawm zinc rau carbonate).

 

Lwm qhov kev ntsuam xyuas tseem ceeb yog rau cov teeb meem insoluble. Qhov no suav nrog kev rhuav tshem qhov hnyav ntawm zinc carbonate hauv kev sib xyaw ntawm cov dej thiab sulfuric acid, ua kom sov cov tshuaj, thiab lim tawm cov khoom tsis sib xws. Tom qab ntawd cov residue yog qhuav thiab hnyav, nrog rau feem pua ​​ntawm cov teeb meem insoluble xam. Industrial-qib zinc carbonate yuav tsum tsis muaj ntau tshaj 0.02% insoluble teeb meem, thaum kws tshuaj-qib yuav tsum muaj kev txwv nruj dua (tsawg dua lossis sib npaug li 0.01%).

 

Kev kuaj hlau hnyav yog qhov tseem ceeb rau kev ua raws li cov qauv thoob ntiaj teb. Cov hlau hnyav hnyav los ntsuas muaj xws li txhuas, arsenic, cadmium, thiab mercury. Atomic absorption spectrophotometry (AAS) yog tus qauv txheej txheem rau kev tsom xam cov hlau hnyav, vim nws tuaj yeem kuaj xyuas cov lej ntawm cov hlau (txog rau qib ppm). Piv txwv li, cov kws kho mob - qib zinc carbonate yuav tsum muaj cov hlau lead tsawg dua lossis sib npaug li 5 ppm, arsenic Tsawg dua lossis sib npaug li 2 ppm, thiab cadmium Tsawg dua lossis sib npaug li 1 ppm, raws li USP thiab FCC cov qauv.

 

Kev ntsuam xyuas rau sulfates thiab chlorides kuj tseem ceeb. Kev ntsuam xyuas sulfate suav nrog kev ua kom tiav cov qauv hauv hydrochloric acid, ntxiv barium chloride, thiab ntsuas qhov turbidity ntawm cov tshuaj (uas qhia tias sulfate cov ntsiab lus). Kev kuaj tshuaj chloride siv cov nyiaj nitrate los ua ib qho dawb precipitate, nrog rau tus nqi ntawm precipitate qhia cov qib chloride. Muaj-qib zinc carbonate feem ntau muaj cov qib sulfate tsawg dua lossis sib npaug li 0.01% thiab cov tshuaj chloride tsawg dua lossis sib npaug li 0.002%.

Rau kev txiav txim xa tawm, nws yog ib qho tseem ceeb uas yuav tsum tau ua haujlwm nrog thib peb -chaw kuaj kev kuaj mob uas tau lees paub los ntawm lub koom haum thoob ntiaj teb (xws li ISO 17025) kom ntseeg tau tias qhov tseeb thiab tsis ncaj ncees. Lub chaw soj nstuam yuav tsum muab daim ntawv pov thawj kev soj ntsuam ntxaws (CoA) qhia txog txhua qhov kev xeem, suav nrog cov ntsiab lus zinc, qib impurity, thiab ua raws li cov qauv tsim nyog (xws li USP, FCC, lossis GB).

 

Los ntawm kev ua cov kev ntsuam xyuas no, cov neeg xa khoom tuaj yeem ua kom ntseeg tau tiaszinc carbonateua tau raws li cov qauv purity uas yuav tsum tau ua rau kev txiav txim xa tawm, zam kev tsis lees paub tus nqi thiab tsim kev ntseeg siab nrog cov neeg yuav khoom thoob ntiaj teb. Kev ntsuam xyuas tsis tu ncua kuj tseem pab tswj cov khoom zoo sib xws, txhawb nqa ntev - kev sib raug zoo ntawm kev lag luam.