CAJ | 학술논문

分别采用佛尔哈德返滴定法和间接碘量法测定了由废液制得硫氰酸亚铜产品中硫氰酸根和总铜的含量。硫氰酸根的待测试液由样品与NaOH溶液通过加热反应制备；测定总铜的试液分别采用硫酸-硝酸和过氧化氢-硝酸与样品反应制备，实验结果表明，用两种方法制备铜试液所测得的总铜含量无差异。所提出的用过氧化氢-硝酸制备总铜试液的方法较硫酸-硝酸制备方法具有方便、快捷的优点。
분별채용불이합덕반적정법화간접전량법측정료유폐액제득류청산아동산품중류청산근화총동적함량。류청산근적대측시액유양품여NaOH용액통과가열반응제비；측정총동적시액분별채용류산-초산화과양화경-초산여양품반응제비，실험결과표명，용량충방법제비동시액소측득적총동함량무차이。소제출적용과양화경-초산제비총동시액적방법교류산-초산제비방법구유방편、쾌첩적우점。
The contents of sulfocyanic anion and total copper in cuprous sulfocyanate product recovered from industrial discard solution by Volhard backtitration method and indirect iodometric method were determined. The assay solution for the determination of sulfocyanic anion was prepared by the reaction of the cuprous sulfocyanate sample with sodium hydroxide under heating. While the assay sample solution for the determination of total copper was obtained from the reaction of the sample with sulfuric acid-nitric acid and hydrogen peroxide-nitric acid, respectively, and the experimental results showed that the total copper content obtained under the two different sample preparation methods has no difference. Because of the merits of convenience and rapidity, we proposed the hydrogen peroxide-nitric acid method to prepare copper assay solution is preferred over sulfuric acid-nitric acid method.