广西科学

引用本文：

蒋治良,梁爱惠.痕量铁的光化学伏安分析新方法研究及应用[J].广西科学,1997,4(1):31-33. [点击复制]
Jiang Zhiliang,Liang Aihui.A Study on the Photochemical Voltammetric Method for Fe and Its Application[J].Guangxi Sciences,1997,4(1):31-33. [点击复制]

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痕量铁的光化学伏安分析新方法研究及应用
蒋治良¹, 梁爱惠²
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(1.广西师范大学计算分析测试中心, 桂林市三里店 541004;2.桂林第三制药厂质检科, 桂林 541004)

摘要:

在稀硫酸介质中及草酸存在条件下,痕量铁对金莲花橙OO光化学褪色反应有较强的催化作用,在氢氧化钠介质中,金莲花橙OO于-0.80V(vs.SCE)处产生一灵敏的2.5次微分极谱波。采用2.5次微分极谱法研究了Fe(Ⅲ)草酸金莲花橙OO光化学新体系,建立了一个检出限和测定范围分别为0.7ng/mL和2ng/mL~100ng/mL铁的光化学伏安分析新方法,并用于试样分析。

关键词: 光化学伏安分析铁金莲花橙OO

DOI：

投稿时间：1996-03-18修订日期：1996-06-07

基金项目:

A Study on the Photochemical Voltammetric Method for Fe and Its Application

Jiang Zhiliang¹, Liang Aihui²

(1.Center of Computer & Testing Analysis, Guangxi Normal University, Sanlidian, Guilin, 541004;2.Cuilin 3rd Pharmeceutical Factory, Guilin, 541004)

Abstract:

A novel photochemical voltammetric method for Fe was described,based on its catalytic effect on the photochemical reaction of tropaeolin OO irradiated by UV light under the conditions of pH 2.0 and existence of oxalic acid as activator,in which tropaeolin OO (E_p=-0.80 V) could be measured by 2.5 order differential voltammetry. A calibration graph from 2 to 100 ng/mL Fe and detection limit of 0.7 ng/mL were obtained by the fixed-irradiation time procedure.Iron in tea and water samples was also analysed.

Key words: Photochemical voltammetric analysis Fe Tropaeolin OO

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