Diphenylthiocarbazonefeem ntau hu ua lead reagent, thiab tshuaj reagent. Blue-dub crystalline hmoov, yooj yim oxidized los ntawm huab cua, tuaj yeem tiv thaiv los ntawm kev ntxiv sulfur dioxide aqueous tov; yooj yim soluble nyob rau hauv carbon tetrachloride thiab chloroform, nws cov tshuaj yog tsis ruaj tsis khov, me ntsis soluble nyob rau hauv ethanol, thiab insoluble nyob rau hauv dej. Rau kev txiav txim siab ntawm cobalt, tooj liab, mercury, zinc, thiab nyiaj; ib tug complex qhia.
Dithizone spectrophotometry yog zom cov qauv dej nrog poov tshuaj permanganate thiab poov tshuaj persulfate nyob rau hauv ib qho alkaline nruab nrab ntawm 95 degrees Celsius los hloov inorganic mercury thiab organic mercury rau divalent mercury. Cov oxidant ntau dhau tau txo nrog hydroxylamine hydrochloride, thiab dithizone tau ntxiv los ua cov txiv kab ntxwv sib xyaw nrog cov mercury ions, uas tau txiav txim siab los ntawm txoj kev calibration nkhaus.
Hauv luv luv, dithizone spectrophotometry yog ib txoj hauv kev uas dithizone siv los ua tus neeg sawv cev chelating kom hnov mob nrog cov hlau ions los ua cov xim xim, thiab tom qab ntawd cov hlau ions raug txiav txim los ntawm spectrophotometric. Qhov no yog ib qho kev tsis ncaj ncees, rho tawm spectrophotometric txoj kev uas feem ntau siv hauv kev saib xyuas ib puag ncig.
Dithizones feem ntau yog siv los ua reagents rau kev txiav txim siab ntawm txhuas, zinc, bismuth, cobalt, cadmium, tooj liab, mercury, nyiaj, thiab lwm yam.
Kev txiav txim siab ntawm txhuas: Hauv qhov txo qis nruab nrab ntawm ammonia citrate-cyanide nrog pH ntawm 8. Cov ntsiab lus ntawm cov hlau lead tuaj yeem txiav txim siab los ntawm kev ntsuas spectrophotometric.
Kev txiav txim siab ntawm cadmium: Hauv cov tshuaj alkaline muaj zog, cadmium ion thiab dithizone tsim cov chelate liab. Tom qab chloroform rho tawm, kev txiav txim siab spectrophotometric yog ua ntawm lub wavelength ntawm 518 nm, thiab tus qauv nkhaus txoj kev yog siv rau kom muaj nuj nqis. Qhov ntsuas ntsuas ntau yog 1 ~ 60ug / L.
Txoj kev no tsim nyog rau kev txiav txim siab ntawm cadmium hauv cadmium-contaminated natural water and wastewater. Cov qauv dej muaj cov hmoov txhuas 20mg / L, zinc 30mg / L, tooj liab 40mg / L, manganese, thiab hlau 4mg / L, uas tsis cuam tshuam rau kev txiav txim siab; Thaum cov magnesium ion concentration nce mus txog 20mg / L, ntau cov poov tshuaj sodium tartrate yuav tsum tau ntxiv rau lub npog ntsej muag.
Tsis tas li ntawd, dithizone tuaj yeem ntsuas zinc thiab mercury. Yog tias koj xav paub yuav ua li cas kuaj, koj tuaj yeem them sai sai rau peb qhov hloov tshiab. Yog tias koj xav yuav cov khoom ntawmdiphenylthiocarbazone, peb cov npe khoom muaj cov khoom zoo dithizone uas ua tau raws li koj qhov kev cia siab, thov koj xav tiv tauj peb.