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氰银能溶解在含氰的溶液中,形成二氰络银离子[Ag(CN)_2~-],根据这一原理,Jugreis将银片放入待测试液中,振摇一小时后用原子吸收法测定溶液中的银。用此法可测定高至3微克/毫升的氰。除硫代硫酸根外,溴、碘、硫氰根和硫酸酐等离子都不会引起干扰。Danchik等提出两种测氰的方法。其一是利用氰和硝酸银作用,产生氰化银沉淀,分离除去沉淀物,在空气-乙炔火焰中,测定水溶液中过剩的银(328.1纳米)来求得氰的含量,该法对氰的灵敏度可达0.03
Cyanide silver can be dissolved in cyanide-containing solution to form silver ions [Ag (CN) _2 ~ -]. According to this principle, Jugreis put the silver plate in the solution to be tested, shaken for one hour, Absorption method for the determination of silver in solution. This method can be measured up to 3 micrograms / ml of cyanide. In addition to thiosulfate, bromine, iodine, thiocyanate and sulfuric anhydride plasma will not cause interference. Danchik et al. Proposed two methods for measuring cyanide. One is to use the action of cyanide and silver nitrate to produce silver cyanide precipitate, separate and remove the precipitate, determine the content of cyanide in the air-acetylene flame by measuring the excess silver (328.1 nm) in the aqueous solution, Sensitivity of up to 0.03