碱性锌镍合金电镀溶液中氢氧化钠、锌、镍的测定  

Determination of sodium hydroxide,zinc and nickel in alkaline zinc-nickel alloy plating bath

作　　者：单彦荣 严鹏飞 宋体杰 刘喜山 Shan Yanrong;Yan Pengfei;Song Tijie;Liu Xishan(Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation,Key Laboratory of Science and Technology on Aeronautical Materials Testing and Evaluation of Aero Engine Corporation of China,AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China;Shenyang Aircraft Corporation,Shenyang 110850,China)

机构地区：[1]中国航发北京航空材料研究院,航空材料检测与评价北京市重点实验室,中国航空发动机集团材料检测与评价重点实验室,北京100095 [2]沈阳飞机工业(集团)有限公司,沈阳110850

出　　处：《分析仪器》2024年第4期70-74,共5页Analytical Instrumentation

摘　　要：研究了碱性锌镍合金电镀溶液中氢氧化钠、镍及锌含量的分析方法。以0.1mol/L盐酸标准溶液,采用自动电位滴定法测定氢氧化钠含量;在过硫酸铵存在下,采用丁二酮肟分光光度法在碱性条件下测定镍含量;采用EDTA络合滴定法测定锌和镍的合量,减去分光光度法测得的镍含量,得到锌含量。试验结果表明,方法的相对标准偏差均小于2%,加标回收率接近100%。Test method of sodium hydroxide,zinc and nickel in alkaline zinc-nickel alloy plating bath was studied.Sodium hydroxide was determined by automatic potentiometric titration with 0.1mol/L HCl as standard solution.At the presence of(NH_4)_2S_2O_4,Nickel content was determined by colorimetry with C_4H_8N_2O_(2) in alkaline solution.Zinc content was calculated by subtracting nickel content from total content of Zn and Ni which was determined by EDTA titration.Relative standard deviation of the test method was less than 2% and the standard addition recovery was close to 100%.

关 键 词：电镀溶液 锌-镍合金 自动电位滴定法 分光光度法 

分 类 号：TQ153.2[化学工程—电化学工业]