摘要
采用国标方法中短碘量法测定含铜物料中的铜时,存在污染环境、检测成本高等问题。实验选用氢溴酸代替溴对不同含铜物料中的铜进行测定,确定氢溴酸最佳加入量为2.0 m L。该方法测定结果的相对标准偏差低于0.12%,加入标准物质回收率为99.70%~100.05%,适用于不同含铜物料中铜的测定,结果再现性好,且降低了对检测人员的伤害,可在生产实践中大力推广。
It generates pollution and high detection cost when copper in copper-containing materials is determined by short iodometry according to national standards.In this paper,the determination of copper in different copper-containing materials was carried out with addition of hydrobromic acid instead of bromine.The optimal addition of hydrobromic acid was 2.0 m L.The relative standard deviation of the determination results was less than 0.12 % and the recovery rate of standard reference material was 99.70 %-100.05 %.The method is applicable to different coppercontaining materials and has high reproducibility and at the same time mitigates hazard to operators.The method is worth promotion in production practices.
出处
《黄金》
CAS
2017年第12期69-71,共3页
Gold
关键词
碘量法
含铜物料
铜
改进
氢溴酸
iodometry
copper-containing material
copper
optimization
hydrobromic acid
