| 水样中镉镍的两次双波长分光光度法测定 |
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| 引用本文： | 孙剑辉,孙瑞霞,吕莉.水样中镉镍的两次双波长分光光度法测定[J].环境科学与技术,2004,27(5):29-30. |
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| 作者姓名： | 孙剑辉 孙瑞霞 吕莉 |
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| 作者单位： | 1. 河南师范大学化学与环境科学学院,新乡,453002
2. 河南省地矿局地球物理勘查队,郑州,453000 |
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| 摘 要： | 研究采用两次双波长分光光度法 ,一次采用双峰双波长法 ,一次采用系数补偿法同时测定水样中的镉和镍。实验结果表明 ,以 5 Br PADAP为显色剂 ,镉和镍的最大吸收峰分别为 544 .8nm和 559.2nm ,最小吸收峰均为 430nm ;镉镍的线性范围为 1～ 1 6μg/ 2 5mL。此法的灵敏度同单波长法相比有明显的提高 ,应用于合成和电镀水样中的镉镍的测定 ,均得到了满意的结果。
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| 关 键 词： | 两次双波长分光光度法 双峰双波长法 系数补偿法 镉 镍 5-Br-PADAP |
| 文章编号： | 1003-6504(2004)05-0029-02 |
| 修稿时间： | 2003年6月12日 |
Dual Wavelength Spectrophotometry for Determination of Cadmium and Nickel in Water |
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| SUN Jian-hui.Dual Wavelength Spectrophotometry for Determination of Cadmium and Nickel in Water[J].Environmental Science and Technology,2004,27(5):29-30. |
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| Authors: | SUN Jian-hui |
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| Institution: | SUN Jian-hui~ |
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| Abstract: | Dual wavelength spectrophotometry is applied for simultaneously determining cadmium and nickel. The spectrophotometry is comprised of two times measurements: first is dual peak/dual wavelength method; second the compensating coefficient method. The results indicate that with 5-Br-PADAP as a developer the greatest absorption peaks for Cd and Ni are 544.8 nm and 559.2 nm respectively, and the linear range: 1 to 16μg/25mL. It is concluded that sensibility is greatly upgraded compared with the conventional single wavelength method. |
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| Keywords: | dual wavelength spectrophotometry two times compensating coefficient method dual peak/dual wavelength method cadmium nickel 5-Br-PADAP |
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