| 分光光度法测定工业己内酰胺中铁 |
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| 引用本文： | 古昆,汤丹瑜,崔永春. 分光光度法测定工业己内酰胺中铁[J]. 云南化工, 1999, 0(1): 44-45 |
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| 作者姓名： | 古昆 汤丹瑜 崔永春 |
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| 作者单位： | 云南大学化学系!昆明650091(古昆),云大化学系(汤丹瑜),昆明师专化学系(崔永春) |
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| 摘 要： | 在ｐ Ｈ＝ ７ 的 Ｎ Ｈ４ Ａｃ 缓冲介质中, Ｃ Ｔ Ｍ Ａ Ｂ 微乳液存在下, Ｆｅ（ Ⅲ） 和铬天青 Ｓ 生成蓝色络合物,λｍａｘ＝ ６５５ｎｍ ,ε＝ １ ．４０ ×１０５ Ｌ·ｍｏ Ｌ－ １·ｃｍ － １ ,铁含量在０ ～６μｇ／２５ｍ Ｌ 内符合比尔定律,方法用于工业己内酰胺中铁的测定,结果满意。
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| 关 键 词： | 铬天青S 铁 光度法 |
Determination of Iron in Industrial Caprolactam by Spectrophotometry |
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| Gu Kun Tang Danyu Cui Yongchun. Determination of Iron in Industrial Caprolactam by Spectrophotometry[J]. Yunnan Chemical Technology, 1999, 0(1): 44-45 |
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| Authors: | Gu Kun Tang Danyu Cui Yongchun |
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| Abstract: | In the presence of cetyltrimethyl ammonium bromide microemulsion,Fe(Ⅲ) was reacted with chrome azurol S and a blue 2:1 complex was formed in ammonium acetate buffer solution(pH=7).The molar absorptivity is 1.40×10 5L·mol -1 ·cm -1 at 655nm.Beer's Law is obeyed in the range of 0～6μg/25ml.This method can be applied to the determination of iron in industrial caprolactam with satisfactory results. |
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| Keywords: | chrome azurol S iron spectrophotometry |
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