ICP-AES测定钨镍铜合金中镍、铜含量  

Determination of Ni and Cu in Tungsten-Nickel-Copper Alloy by Inductively Coupled Plasma Atomic Emission Spectrometry

作　　者：赵欢娟 杨军红 刘厚勇 王小静 高明明 Zhao Huanjuan;Yang Junhong;Liu Houyong;Wang Xiaojing;Gao Mingming(Xi’an Hantang Analysis and Testing Co.,Ltd.,Xi’an 710016,China;Kaili Catalyst&New Materials Co.,Ltd.,Xi’an 710201,China)

机构地区：[1]西安汉唐分析检测有限公司,陕西西安710016 [2]西安凯立新材料股份有限公司,陕西西安710201

出　　处：《山东化工》2020年第15期115-116,118,共3页Shandong Chemical Industry

摘　　要：本试验采用氢氟酸-硝酸溶解钨铜合金样品,建立电感耦合等离子体原子发射光谱法(ICP-AES)测定钨镍铜合金中镍、铜元素的分析方法。对溶解酸选择、基体影响、谱线选择等进行讨论。结果表明,基体钨影响测定结果,采用基体匹配消除基体钨的干扰,优选出231.604 nm、341.476 nm为镍的分析谱线,324.752 nm、327.393 nm为铜的分析谱线。在优化条件下对钨镍铜合金样品进行测定,系列工作曲线线性相关系数在0.999以上,镍元素的检出限为0.0021%,铜元素的检出限为0.0035%,测定结果相对标准偏差(RSD,n=11)小于2%,回收率为98.00%~103.00%。Metals in tungsten-nickel-copper alloy samples such as nickel and copper were determined by inductively coupled plasma atomic emission spectrometry with hydrofluoric-nitric acid dissolution.The dissolved acid,the interferences of the matrix,the analytical lines were discussed in this paper.It was showed that the test results were affected by the matrix and the interferences were eliminated by using the matrix matching method.The analytical lines of 231.604 nm、341.476 nm for nickel and 324.752 nm、327.393nm for copper were optimal.The proposed method has been applied to determine the nickel and copper in tungsten-nickel-copper alloy,the linear correlation coefficients were all above 0.999,the detection limits for nickel and copper was 0.0021% and 0.0035% respectively,the recovery was 98.00%~103.00%,and the relative standard deviation(RSD,n=11)was less than 2%.

关 键 词：电感耦合等离子体原子发射光谱法 钨镍铜合金 镍 铜 

分 类 号：O657.31[理学—分析化学]