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Citation: TAO Fu-Fang, DONG She-Ying, ZHANG Hong-Fang, ZHENG Jian-Bin. Application of β-Cyclodextrin to Determination of Cu²⁺ by Second Order Differential Simple Oscillographic Voltammetry[J]. Chinese Journal of Applied Chemistry, ;2003, 20(8): 723-726. shu

Application of β-Cyclodextrin to Determination of Cu²⁺ by Second Order Differential Simple Oscillographic Voltammetry

1.
Institute of Analytical Science, Northwest University, Xi'an 710069

Corresponding author: ZHENG Jian-Bin,
Received Date: 18 December 2002
Available Online: 2 April 2003
Fund Project: 国家自然科学基金资助项目(20275030) (20275030)教育部科学技术研究重点项目(02187) (02187)教育部高等学校骨干教师资助计划项目(GG150710062877) (GG150710062877)陕西省教育厅专项科研基金资助项目(01JK076) (01JK076)

In 0.2 mol/L NaOH, β-CD can cause a pair of reversible incision on dE/dt-E curve, and its depth would get shallow with increase of the inclusion complex of Cu²⁺-β-CD. A feasibe method for determination of Cu²⁺ in silicon brass was founded based on this oscillographic characteristic. The linear range of concentration for Cu²⁺ is 1.0×10^-6~2.0×10^-5 mol/L with detection limit 8.0×10^-7 mol/L. The correlation equation coefficient is h(v)=-3.861×10⁴ c+4.819(mol/L) and r=-0.999 2. The RSD for 7.0×10^-6 mol/L Cu²⁺ is 2.1%(n=5), and average recovery 102.4%(n=5). Moreover, on addition of rutin to the 0.2mol/L NaOH solution of β-cyclodextrin the inclusion reaction between rutin and β-CD could be monitored by changing of the incision depth of β-CD.
- oscillographic analysis,
- β-cyclodextrin,
- copper ion,
- silicon brass
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Application of β-Cyclodextrin to Determination of Cu2+ by Second Order Differential Simple Oscillographic Voltammetry

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通讯作者: 陈斌, bchen63@163.com

Application of β-Cyclodextrin to Determination of Cu²⁺ by Second Order Differential Simple Oscillographic Voltammetry