Cov nag lossis daus liab tuaj yeem yog sodium polysulfide nag lossis daus.Sodium sulfide feem ntau yuav oxidized los ntawm huab cua rau sodium polysulfide (ua sulfur rau hauv ib qho teeb meem, thiab tom qab ntawd tsim sodium polysulfide). Thaum cov sulfur Performance index ntawm sodium polysulfide siab, nws yog tsaus liab nyob rau hauv lub aqueous tov, thiab nws tshwm sim vim insoluble tshuaj nyob rau hauv anaqueous tej yam kev mob. Tsis tas li ntawd, carbon tetrachloride kuj decompose rau hauv sodium chloride (potassium) + sodium carbonate (potassium) thiab dej (1:6 cov tshuaj tiv thaiv tuaj yeem sau tau).Kev sib xyaw ua ke ntawm oxidation thiab decomposition cov tshuaj tiv thaiv kuj tuaj yeem txhawb ib leeg, thiab lwm yam kev cuam tshuam kuj tshwm sim.
Kev txheeb xyuas ntawm txoj kev siv nag lossis daus liab
Tshem tawm cov tshuaj liab thiab ntxuav nws ob peb zaug nrog cov ethanol kiag li (sim ntxuav cov tshuaj sodium sulfide) kom pom tias nws puas yuav yaj.Ntxiv qee cov pa roj carbon disulfide ua ntej kom pom tias nws daws tau (kom kuaj cov sulfur ib leeg, txawm hais tias nws yog daj). , thiab ntxuav nws ob peb zaug nrog ethanol. Siv me me ntawm nag lossis daus thiab dilute sulfuric acid, saib seb puas muaj hydrogen sulfide khiav tawm (koj yuav tsum tau hnov tsw tawm, koj tuaj yeem siv cov hmoov txhuas acetate ntub dej los yog lead nitrate test paper test) , nag lossis daus loj npaum li cas ntawm kev hloov pauv mus rau lub teeb daj lossis milky dawb turbidity, qhov no yog cov khoom ntawm sodium polysulfide (potassium) qhov tshwm sim.Cov kev sim saum toj no tau ua pov thawj seb sodium polysulfide (potassium).Nws kuj tuaj yeem tsim los ua pov thawj seb puas muaj carbonate ntau lawm (carbon tetrachloride alkali decomposition khoom).
Post lub sij hawm: Jun-13-2022
