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| 过氧化氢-铁(Ⅲ)-罗丹明B催化体系测定痕量铁 |
| Determination of Trace Iron(Ⅲ)by Catalytic Kinetic Spectrophotometry of H2O2 -Fe(Ⅲ)-RhB System |
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| DOI：10.3969/j.issn.1671-5322.2003.02.009 |
| 中文关键词: 分光光度法 铁 罗丹明B |
| 英文关键词: Spectrophotometry Iron Rhodamine B |
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| 中文摘要: |
| 在醋酸-醋酸钠弱酸性介质中,利用铁(Ⅲ)对过氧化氢氧化罗丹明B的催化作用,建立了催化光度测定痕量铁的新方法.该方法线性范围为0～1.0 μg/25 mL,方法检出限为2.96×10-9 g/mL.此方法用于水样中微量铁的测定,结果令人满意. |
| 英文摘要: |
| A kinetic spectrophotometric method for determination of trace iron(Ⅲ) was established. It was based on the discoloring reaction of rhodamine B with hydrogen peroxide catalyzed by Fe(Ⅲ)In.HAc-NaAc solution(pH=3.2). The absorption maximum is at 550 nm and Beer’s law is obeyed in the range of 0～1.0 μg/25 mL of Fe(Ⅲ).The detection limit of this method is 2.96×10 -9 g/mL. This method was applied to the determination of iron in water with satisfactory results. |
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