基于重量法的贵金属合金电镀废水中硫酸根离子的测定  

Determination of sulfate ions in precious metal alloy electroplating wastewater using gravimetric method

作　　者：赵鲁国 李尚远 徐剑瑛 王绍娟 曹全苹 丁志超 Zhao Luguo;Li Shangyuan;Xu Jianying;Wang Shaojuan;Cao Quanping;Ding Zhichao(Shandong Zhaojin Gold&Silver Refinery Co.,Ltd.;ZHN Precious Metals Testing Co.,Ltd.)

机构地区：[1]山东招金金银精炼有限公司 [2]中恒诺贵金属检测有限公司

出　　处：《黄金》2024年第8期117-120,共4页Gold

摘　　要：贵金属合金电镀废水中硫酸根离子的准确测定具有重要意义。研究建立了一种基于重量法的贵金属合金电镀废水中硫酸根离子的分析方法,通过一系列条件优化实验,确定了以盐酸羟铵作为去除干扰的试剂,以及盐酸羟铵用量、氯化钡用量、取样量等。在最佳条件下,本方法加标回收率为99.33%~101.07%,测定结果的相对标准偏差为0.27%~3.42%,加标回收率和精密度满足分析测试需求。The accurate determination of sulfate ions in precious metal alloy electroplating wastewater is of great significance.This study establishes a gravimetric method for analyzing sulfate ions in precious metal alloy electroplating wastewater.Through a series of condition optimization experiments,ammonium hydroxide hydrochloride was identified as the reagent for interference removal,along with the optimal amounts of ammonium hydroxide hydrochloride,barium chloride,and sample volume.Under optimal conditions,the spiked sample recovery rate of this method is 99.33%-101.07%,with a relative standard deviation of 0.27%-3.42% for the determination results.The spiked sample recovery rate and precision meet the requirements for analytical testing.

关 键 词：重量法 电镀废水 硫酸根离子 干扰去除 取样量 

分 类 号：TD926.3[矿业工程—选矿]