| 流动注射分离富集—火焰原子吸收光度法测定烧碱中铁镍铜 |
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| 引用本文： | 张衍林.流动注射分离富集—火焰原子吸收光度法测定烧碱中铁镍铜[J].理化检验(化学分册),1999,35(4):174-175. |
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| 作者姓名： | 张衍林 |
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| 作者单位： | 齐鲁石化公司研究院 淄博255400 |
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| 摘 要： | 用螯合树脂作吸附剂，流动注射法分离富集烧碱中铁、镍、铜，火焰原子吸收光度法测定，在１２０ｈ＾－１、６０ｈ＾－１的采样频率下，三种元素富集倍数分别为６．５，１３．５，１４。方法用于工业烧碱中铁、镍、铜测定，回收率分别为９６．２％、９６．４％和９７．４％，ＲＳＤ分别为２．５％、３．６％和３．５％。
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| 关 键 词： | 流动注射 原子吸收 烧碱 镍 铜 铁 测定 |
FIA-FAAS DETERMINATION OF IRON NICKEL AND COPPER IN CAUSTIC SODA |
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| Zhang Yanlin.FIA-FAAS DETERMINATION OF IRON NICKEL AND COPPER IN CAUSTIC SODA[J].Physical Testing and Chemical Analysis Part B:Chemical Analgsis,1999,35(4):174-175. |
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| Authors: | Zhang Yanlin |
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| Institution: | Resarch Institute of Qilu Petrochemical Corp. Zibo 255400 |
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| Abstract: | A flow injection system with chelating resin filled miniature column was used to separate and preconcentrate Fe~(3+) , Ni~(2+) and Cu~(2+) from caustic soda for the determination with flame atomic absorption spec-trometry. At sampling frequencies of 120h~(-1), 60h~(-1) and 60h~(-1) preconcentration factors of 6.5, 13. 5 and 14 for Fe~(3+)? Ni~(2+)?Cu~(2+) were attained respectively. The method has been successfully used for the determination of the three metals in industrial caustic soda, with recoveries of 96. 2%, 96.4% and 97. 4% and RSD of 2.5% , 3. 6% and 3. 5% respectively. |
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| Keywords: | Flow injection analysis Atomic absorption spectrometry Caustic soda Nickel Copper Iron |
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