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標題Title: A Study of Detection of Glucose for the Electrode Modified with Ruthenium Hexacyanoferrate
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: 論文Thesis
關鍵詞Keyword: Ruthenium Hexacyanoferrate, Carbon Paste Electrode, Operating Conditions, Hydrogen Peroxide, Glucose
摘要Abstract: Nowadays, sometimes the hydrogen peroxide is used in the food industry for the purpose of food preservation. Therefore, developing a hydrogen peroxide sensor is an important research subject and developing a glucose biosensor which can detect glucose rapidly and conveniently is also an important research subject. The glucose and oxygen can be catalyzed by the glucose oxidase to produce the gluconic acid and hydrogen peroxide. A study was conducted to use the ruthenium hexacyanoferrate(Ⅱ) to modify the carbon paste electrode which was used as the working electrode to detect the responding current of reduction of hydrogen peroxide in the PBS buffer solution( pH = 7.4 ) and the concentration of the glucose could be determined. At 30℃ , -200 mV operating potential, and in 0.05 M PBS buffer solution( pH = 7.4 ), when the carbon paste electrode was modified with ruthenium hexacyanoferrate(Ⅱ) [ruthenium hexacyanoferrate(Ⅱ) : graphite carbon powders = 3 : 7 ( weight ratio )] , the detection limit was 0.02 mM H2O2 , the linear range was 0.02~2.7 mM H2O2, R2=0.9996, and the sensitivity was 661.8 μA/cm2ּmM H2O2 . For the glucose biosensor, 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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