电感耦合等离子体原子发射光谱法测定镍硼合金中硼  

Determination of boron in nickel-boron alloy by inductively coupled plasma atomic emission spectrometry

作　　者：安中庆[1,4,5] 方海燕 范兴祥 周娅[1,4,5] 赵德平[1,4,5] 刘英波 AN Zhong-qing;FANG Hai-yan;FAN Xing-xiang;ZHOU Ya;ZHAO De-ping;LIU Ying-bo(Kunming Metallurgical Research Institute,Kunming 650031,China;Sino-Platinum Metals Co.,Ltd.,Kunming 650106,China;Kunming Metallurgy College,Kunming 650033,China;Yunnan Key Laboratory for New Technology of Beneficiationand Metallurgy,Kunming 650031,China;State Key Laboratory of Pressure Hydrometallurgical Technology of Associated Nonferrous Metal Resources,Kunming 650031,China)

机构地区：[1]昆明冶金研究院,云南昆明650031 [2]贵研铂业股份有限公司,云南昆明650106 [3]昆明冶金高等专科学校,云南昆明650033 [4]云南省选冶新技术重点实验室,云南昆明650031 [5]共伴生有色金属资源加压湿法冶金技术国家重点实验室,云南昆明650031

出　　处：《冶金分析》2020年第2期76-80,共5页Metallurgical Analysis

摘　　要：镍硼合金作为高温焊接材料广泛应用于航空航天、钢铁冶金、石油化工以及能源电力等领域。镍硼合金的力学性能受硼含量影响,准确测定镍硼合金中的硼含量尤为重要。采用王水分解样品,在10%王水介质中,以电感耦合等离子体原子发射光谱法(ICP-AES)测定硼,建立了ICP-AES测定镍硼合金中硼的方法。实验结果表明,溶液中镍质量浓度不大于2500μg/mL时,不干扰硼的测定,其他共存元素含量较低,均不干扰测定;校准曲线的线性范围为0.25~25.00μg/mL,校准曲线线性相关系数为0.99995;方法检出限为2.0μg/g。方法用于镍硼合金中0.55%~9.81%硼的测定,结果的相对标准偏差(RSD,n=11)为0.92%~4.9%。分别使用实验方法和滴定法、分光光度法测定相同镍硼合金样品中硼,测定结果基本一致。As a kind of high temperature welding material,the nickel-boron alloy is widely used in many fields such as aerospace,iron and steel metallurgy,petrochemical industry,energy and electric power.The mechanical properties of nickel-boron alloys are affected by the content of boron.Therefore,it is very important to accurately determine the boron content in nickel-boron alloys.The sample was decomposed with aqua regia.The content of boron was determined by inductively coupled plasma atomic emission spectrometry(ICP-AES)in the medium of 10%aqua regia.The determination method of boron in nickel-boron alloy by ICP-AES was established.The experimental results show that the determination was not interfered by nickel when its mass concentration in sample solution was less than 2500μg/mL.The contents of other coexisting elements were low and had no interference with the determination.The linear range of calibration curve was 0.25-25.00μg/mL with linear correlation coefficient of 0.99995.The limit of detection was 2.0μg/g.The proposed method was applied for the determination of boron(0.55%-9.81%)in nickel-boron alloys.The relative standard deviations(RSD,n=11)of determination results were between 0.92%and 4.9%.The content of boron in nickel-boron alloy sample was determined by proposed method,titration method and spectrophotometry,respectively.And the measurement results were basically the same.

关 键 词：硼 镍硼合金 基体效应 电感耦合等离子体原子发射光谱法 

分 类 号：O657.31[理学—分析化学] TF033[理学—化学]