| 用铬天青S分光光度法测定铍青铜中的铍 |
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| 引用本文： | 彭小伟,周琳燕,彭淑珍.用铬天青S分光光度法测定铍青铜中的铍[J].洪都科技,2008(2):34-40. |
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| 作者姓名： | 彭小伟 周琳燕 彭淑珍 |
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| 作者单位： | 洪都航空工业集团 |
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| 摘 要： | 论述了利用铬天青S与铍在pH9．7的酸度条件下所形成的二元络合物来测定铍青铜中铍的方法。确定了方法条件及共存离子的影响，λmax为490nm，铍含量在0μg／mL～1．0μg/mL范围内，络合物吸光度严格呈二次曲线，铍含量0．5μg／mL时表观摩尔吸光系数ε为3．8×10^4L·mol^-1·cm^-1，回收率为98．4％～100．9％。
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| 关 键 词： | 铬天青S 光度法 铍青铜 铍 |
Measurement of Beryllium in Beryllium Bronze with CAS Spectrophotometric Method |
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| Peng Xiaowei,Zhou Linyan,Peng Shuzhen.Measurement of Beryllium in Beryllium Bronze with CAS Spectrophotometric Method[J].Hongdu Science and Technology,2008(2):34-40. |
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| Authors: | Peng Xiaowei Zhou Linyan Peng Shuzhen |
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| Institution: | Peng Xiaowei Zhou Linyan Peng Shuzhen (Hongdu Aviation Industry Group) |
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| Abstract: | Has a discussion on measurement of beryllium in beryllium bronze by means of dyadic complex formed by CAS and beryllium under the acidity condition of pH9.7. It defines the method and conditions as well as influence of coexist ion, λmax is 490nm, content of beryllium is within the scope of 0μg/mL - 1.0μg/ML, absorbency of complex strictly presents the quadratic curve, when content of beryllium is 0.5 tLg/mL, apparent molar absorption coefficient e is 3.8 × 10^4L · mol^-1· cm^-1, recovery rate 98.4% - 100.9%. |
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| Keywords: | CAS Spectrophotometry Beryllium bronze Beryllium |
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