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標題Title: An Analysis of Detection of the Responding Current of Hydrogen Peroxide for the Carbon Paste Electrode Modified with Meldola’s Blue
作者Authors: 連崇閔,羅濟玟 ..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: 連崇閔
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: Meldola's Blue , Carbon Paste , Responding Current , Hydrogen Peroxide Sensor
摘要Abstract: A study was conducted to use the Meldola’s Blue to modify the carbon paste electrode and the results showed that the responding current for the carbon paste electrode modified with Meldola’s Blue was elevated significantly. A study of experimental design involving three factors (operating potential, stirring rate, and pH value of PBS) and two levels was performed to analyze the effect of reaction parameters on the average responding current of detection of hydrogen peroxide for the carbon paste electrode modified with Meldola’s Blue. The results showed that the main effect of operating potential ( F = 36.521, p value < 0.05 ), the main effect of stirring rate ( F = 7.326, p value < 0.05 ), and the main effect of pH value ( F = 7.635, p value < 0.05 ) were significant on the average responding current. At 30℃, -300 mV operating potential, 500 rpm stirring rate and in 0.05 M PBS buffer solution ( pH = 7.4 ) , when the carbon paste electrode was modified with Meldola’s Blue [Meldola’s Blue : carbon powders : carbon paste = 2 :15 :15 ( weight ratio )] , the detection limit was 0.02 mM H2O2 , the linear range was 0.02~1.4 mM H2O2 , R2 = 0.9994 , and the average responding current was 2.54 µA.


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