电感耦合等离子体原子发射光谱法测定高温合金中微量硼  

ICP-AES Determination of Trace Amount of Boron in High Temperature Alloy

作　　者：李芬[1] 叶建平 周西林 

机构地区：[1]重庆工业职业技术学院化学工程系,重庆401120 [2]重庆机械工业理化计量中心,重庆401147 [3]重庆市计量质量检测研究院铝镁中心,重庆401121

出　　处：《理化检验（化学分册）》2013年第8期976-978,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：提出了电感耦合等离子体原子发射光谱法测定高温合金中硼含量的方法。高温合金称样0．5000g，用盐酸一硝酸（5＋1）混合酸20mL和氢氟酸1mL溶解。硼的分析谱线为249．678nm。硼的质量浓度在4．00mg·L-1以内与其发射强度呈线性关系，方法的检出限（3S／N）为2．1μg·L-1。方法用于分析5个高温合金标准样品和已知样品，测定值与认定值或已知值相符，测定值的相对标准偏差（（n=6）在0．46～4．6％之间。A method for the determination of boron in high temperature alloy by ICP-AES was proposed in this paper. 0. 500 0 g of sample was dissolved with 20 mL of a mixed acid of HC1 and HN（ （5-〉1） and 1 ml. of HF. The spectral line of 249. 678 nm was selected as analytical line for the determination. Linear relationship between values of emission intensity and mass concentration of boron was kept in the range within 4.00 mg . Value of detection limit （3S/N） of the method found was 2. 1 /g L . The proposed method was used in the analysis of 5 standard or known samples of high temperature alloy, giving results in consistency with their certified values or known value. Values of RSD＇s （n=6） found were in the ranges of 0. 46%-4.6%.

关 键 词：电感耦合等离子体原子发射光谱法 高温合金 硼 

分 类 号：O657.31[理学—分析化学]