1. Kala soocida nitric acid si loo soo saaro dahabka kala soocida nitric acid waa la isticmaali karaa, nitric acid oo la isku ururiyey oo la gashado, baahida loo qabo in dahab laga soo saaro birta oo lagu dhejiyo. Beaker-ka ayaa markaa la dul dhigayaa weel qaade oo lagu kululeeyo laambad alkohol ah si uu u soo saaro dahab jilicsan.
2. Kala soocida Aqua regia marka lagu daro soo saarista dahabka, kala soocida aqua regia ayaa la isticmaalaa. Ka dib marka la isku daro qayb ka mid ah nitric acid iyo saddex qaybood hydrochloric acid galay aqua regia, biraha u baahan in la soo saaro ayaa la gelinayaa aqua regia oo la sifeeyaa ka dib marka falcelinta birta ay dhammaato. Kadibna waa la kululeeyaa oo ugu dambeyntii lagu beddelaa go'yaal naxaas ah, kuwaas oo sidoo kale laga soo saari karo dahab.
3. Habka kala-soocidda H2SO4 wuxuu isku daraa H2SO4 iyo H2O4 ee saamiga hal ilaa hal, ka dibna wuxuu dhigayaa tignoolajiyada loo baahan yahay in lagu sifeeyo xalka H2O4, wuxuuna sugayaa dhamaadka falcelinta birta, shayga birta ah ee jaalaha ah waa dahab.
Alaabada ceyriinka ah ee dahabka laga soo saaro markii hore agabka dahabka laga soo saaro waxa ay u badnaayeen macdanta dahabka, macdanta dahabka leh ee laga soo saaro macdanta dahabka, taas oo ay ku jiraan macdano kale oo qaali ah. Sida aan wada ognahay, dahabka waxaa si weyn loogu isticmaalaa qaybaha elektaroonigga ah, dahabka, baytariyada, filimada caafimaadka, fiilooyinka, iwm. Markaa hadda qashinka elektarooniga ah, qashinka dahabka ayaa sidoo kale lagu sifeyn karaa dahabka iyo biraha kale ee qaaliga ah. Sifaynta dahabku waa habka looga saaro wasakhda bullion ama dahabka dahaadhka ah ee dufcadaha si ay awood ugu siiso alaabta dahabka ah inay buuxiyaan shuruudaha tayada ee heerarka ganacsiga dahabka.
Markaad samaynayso budada ama jajabyada, waxay isticmaali kartaa mashiinka samaynta budada Hasung iyo mashiinka samaynta birta sifaynta ujeedada dahabka. Ka dib markii nadiifinta la dhammeeyo, isticmaal mashiinka tuurista bar dahabka ee Hasung si aad u hesho baararka dahabka dhaldhalaalaya.
Waqtiga boostada: Agoosto-28-2023
