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《化学分析计量》 2020年第01期
DOI:10.3969/j.issn.1008-6145.2020.01.021
电感耦合等离子体-原子发射光谱法同时测定铝合金中9 种元素
冯凤,刘婧,陶曦东
( 中车南京浦镇车辆有限公司,南京 210031) 
Simultaneously determination of 9 kinds of elements in aluminum alloy by inductively coupled plasma atomic emission spectrometry
FENG Feng, LIU Jing, TAO Xidong
(CRRC Nanjing Puzhen Co., Ltd., Nanjing 210031, China) 
摘要:建立电感耦合等离子体原子发射光谱同时测定铝合金中9 种元素含量的方法。铝合金样品采用碱溶法 预处理,以质量分数为40% 的氢氧化钠溶液溶解,再用盐酸-硝酸混合酸酸化,然后用电感耦合等离子体原子发射光谱法同时测定样品中铁、硅、铜、镁、锰、锌、钛、镍、铬9 种元素的含量。各元素的含量与对应的发射强度呈良好的线性关系,相关系数不小于0.999 0 ;各元素检出限为0.000 1%~0.001 2%。应用该方法测定2 个铝合金标准样品,测定结果与标示值一致,相对标准偏差为0.46%~2.14% (n=8)。将该法应用于试样测定时,加标回收率为92%~106%。该方法精密度和准确度高,操作简便、快速,适用于实验室铝合金多元素含量的检测。 
Abstract:An inductively coupled plasma atomic emission spectrometry (ICP-AES) method was established to simultaneuosly determine 9 kinds of elements in aluminum alloy. The aluminum alloy sample was dissolved with 40% sodium hydroxide solution, and then acidified with mixed acid of HCl and HNO3. The content of 9 kinds of elements including Fe, Si, Cu, Mg, Mn, Zn, Ti, Ni and Cr was simultaneously determined by ICP-AES. The content of each element had good linear relationship with the corresponding emission intensity with the correlation coefficient not more than 0.999 0, and the detection limit was 0.000 1%-0.001 2%. Two reference materials of aluminum alloy were determined by this method, and the measured values were consistent with the identified values, and the relative standard deviation was 0.46%-2.14% (n=8). The recovery rates of standard addition samples were 92%-106%. This method has high precision and accuracy, simple and fast operation, and it is suitable for the detection of multi element content in aluminum alloy in laboratory. 
关键词:电感耦合等离子体原子发射光谱法;铝合金;铁;硅;铜;镁;锰;锌;钛;镍;铬 
Keywords:ICP-AES; aluminum alloy; Fe; Si; Cu; Mg; Mn; Zn; Ti; Ni; Cr 
本文引用格式:
冯凤,刘婧,陶曦东. 电感耦合等离子体- 原子发生光谱法同时测定铝合金中9 种元素[J]. 化学分析计量,2020,29(1):87-90.
FENG F,LUI J,TAO X D. Simultaneously determination of 9 kinds of elements in aluminum alloy by inductively coupled plasma atomic emission spectrometry[J]. Chemical analysis and meterage,2020,29(1):87-90. 

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