电感耦合等离子体发射光谱法测定铍盐中痕量硼  

Determination of boron at trace level in beryllium salts by inductively coupled plasma optical emission spectrometry

作　　者：唐晓星 马继飞 刘忠英 李玉兰[1] 钱渊[1] TANG Xiaoxing;MA Jifei;LIU Zhongying;LI Yulan;QIAN Yuan(Key Laboratory of Interfacial Physics and Technology,Chinese Academy of Sciences,Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800)

机构地区：[1]中国科学院微观界面物理与探测重点实验室,中国科学院上海应用物理研究所,上海201800

出　　处：《分析试验室》2020年第8期910-913,共4页Chinese Journal of Analysis Laboratory

基　　金：中国科学院战略先导专项项目(XDA02020400)资助。

摘　　要：建立了ICP-OES法测定铍盐中痕量硼的分析方法。铍盐样品采用HNO3超声溶解后,直接测定。经硼全谱分析,B 249.773 nm和B 249.677 nm受铍干扰严重,无法使用。B 182.641 nm和B 208.959 nm可用于高纯铍盐中B含量的分析,但B 182.641 nm不能用于硫含量高的铍盐样品。B 182.641 nm和B 208.959 nm的检出限分别为0.12 mg/kg和0.17 mg/kg,相对标准偏差小于2.8%,满足核纯级铍盐中痕量硼的分析需求。采用铍盐实际样品对比了标准加入法和外标法的测量差异,结果显示,使用HNO3(1+19)基体的外标校正溶液,测量结果明显低于标准加入法,相对偏差在-7.5%^-40%之间,不建议使用。A method for determination of boron at trace level in beryllium salts was proposed.Beryllium salts were measured directly after resolved by diluting nitric acid to decrease the pollution of beryllium.Through analysis of boron spectrum,B 249.773 nm and B 249.677 nm cannot be used because of spectral interference by beryllium.B 182.641 nm and B 208.959 nm can be used to analyze high pure beryllium salt.But B 182.641 nm cannot be used to analyze beryllium salt containing high concentration of sulfur.The detection limits of B 182.641 nm和B 208.959 nm were 0.12 mg/kg and 0.17 mg/kg.And the relative standard deviation(RSD)was less than 2.8%.Besides,the results of the comparison between standard addition method and external standard method showed that results of the boron using external standard method of 5%nitric acid matrix relative deviation between-7.5% and-40%,were significantly lower than those using standard addition method.So external standard method was not recommended.

关 键 词：电感耦合等离子体发射光谱 铍盐 硼 

分 类 号：O657.31[理学—分析化学]