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標題Title: The Ratios of Ruthenium Hexacyanoferrate to Carbon Powders on the Sensitivity of Detection of Hydrogen Peroxide for the Carbon Paste Electrode Modified with Ruthenium Hexacyanoferrate and Its Application to Glucose Biosensor
作者Authors: 林庭立,廖國翔 ..等
上傳單位Department: 化學工程與材料工程系
上傳時間Date: 2011-5-29
上傳者Author: 林庭立
審核單位Department: 化學工程與材料工程系
審核老師Teacher: 林浩
檔案類型Categories: 專題報告Project Report
關鍵詞Keyword: Ruthenium Hexacyanoferrate , Carbon Powders , Electrode , Glucose Biosensor
摘要Abstract: A study was conducted to use the ruthenium hexacyanoferrate(Ⅱ) to modify carbon paste electrode which was used as the working electrode to detect the responding current of reduction of hydrogen peroxide in the phosphate buffer solution( pH = 7.4 )and the sensitivity of detection of hydrogen peroxide was determined from the responding current and consequently, the concentration of the glucose could be determined. The results showed that the responding current for the carbon paste electrode modified with the ruthenium hexacyanoferrate(Ⅱ) was elevated significantly. At 30℃, -0.2V operating potential, and in 0.05 M phosphate buffer solution (PBS), the TB (Time Base) graphs for the carbon paste electrode modified with different ratios of ruthenium hexacyanoferrate to carbon powders were plotted to evaluate the effect of the ratios of ruthenium hexacyanoferrate to carbon powders on the responding current of detection of hydrogen peroxide. At 30℃ , -0.2V operating potential, and in 0.05 M phosphate buffer solution( pH = 7.4 ), when the carbon paste electrode was modified with the ruthenium hexacyanoferrate(Ⅱ) [ruthenium hexacyanoferrate(Ⅱ) : carbon powders = 3 : 7 ( weight ratio )] , the detection limit was 0.02 mM C6H12O6 , the linear range was 0.02~2.56 mM C6H12O6 , R2=0.999, and the sensitivity was 4.11 µA/cm2.mM C6H12O6.



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