| 流动注射原子吸收光谱法快速测定工业废水中Cr(Ⅲ)和Cr(Ⅵ) |
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| 引用本文： | 赵淑珍,李惕川,何先莉,蒋明蔚.流动注射原子吸收光谱法快速测定工业废水中Cr(Ⅲ)和Cr(Ⅵ)[J].北京工业大学学报,1992(1). |
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| 作者姓名： | 赵淑珍 李惕川 何先莉 蒋明蔚 |
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| 作者单位： | 北京工业大学化学与环境工程学系，北京工业大学化学与环境工程学系，北京工业大学化学与环境工程学系，北京工业大学化学与环境工程学系 85级毕业生 |
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| 摘 要： | 提出了用微型Al_2O_3柱在线预浓集流动注射原子吸收光谱法快速、灵敏测定Cr(Ⅲ)和Cr(Ⅵ)的方法,从过柱的Cr(Ⅲ)和Q(Ⅵ)混合液中分离(Ⅵ)浓集(Ⅲ),在357.8nm波长处先后获得Cr(Ⅵ)和Cr(Ⅲ)的漏过和洗脱响应,在0～1000μg/L浓度范围内得到Cr(Ⅲ)和Cr(Ⅵ)的线性校正曲线,该法用于电镀厂,开关厂实际废水样品测定,获得满意结果,回收率分别为100％～105％(Cr(Ⅲ))和82％～113％(Cr(Ⅵ)),RSD分别为2.8％(Cr(Ⅲ))和1.8％(Cr(Ⅵ))。
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| 关 键 词： | 铬(Ⅲ)-铬(Ⅵ)的分离 流动注射分析 原子吸收光谱法 |
Rapid and Sequential Determination Chromium (Ⅲ)-Chromium (Ⅵ) by Flow Injection Analysis-Atomic-Absorption Spectrometry |
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| Zhao Shuzhen Li Tichuan He Xianli Jiang MingWei.Rapid and Sequential Determination Chromium (Ⅲ)-Chromium (Ⅵ) by Flow Injection Analysis-Atomic-Absorption Spectrometry[J].Journal of Beijing Polytechnic University,1992(1). |
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| Authors: | Zhao Shuzhen Li Tichuan He Xianli Jiang MingWei |
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| Affiliation: | Department of Chemical Environmental Engineering |
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| Abstract: | A rapid and sensitive method for the sequential determination of Cr(Ⅲ)-Cr(Ⅵ) based on FIA-AAS has been develpoed.A micro-column of activated alumina was used in the FIA manifold to separate and pre-concentrate Cr(Ⅲ) from Cr (Ⅵ) in aqueous solution before detection at 357.8nm.Linear calibration for Cr(Ⅲ) and Cr(Ⅵ) was established over the concentration range 0-1000μg/L.The satisfactory results were obtained for the waste water determination of electrodepositon and switch plants.The relative standard deviations were 2.8% for Cr(Ⅲ) and 1.8% for Cr(Ⅵ) and the recoveries were 105% for Cr(Ⅲ) and 113% for Cr (Ⅵ) respectively. |
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| Keywords: | Cr(Ⅲ) - Cr(Ⅵ) speciation flow injection analysis atomic-absorption spectrometry |
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