尚未登入 請由此登入
 
 
 










知識分享平台Eshare檢視資訊View
返回前一頁Back
      [檢舉]

標題Title: The pH on the Detection of Hydrogen Peroxide for Electrode Modified with Chromium Hexacyanoferrate
作者Authors: 林庭立,胡真熏 ..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: pH of Buffer Solution, Chromium Hexacyanoferrate, Carbon Paste Electrode, Sensitivity, Hydrogen Peroxide
摘要Abstract:
Because hydrogen peroxide plays an important role in industry, a convenient sensor for detecting the hydrogen peroxide 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 and the glucose is oxidized to gluconic acid and the oxygen is reduced to hydrogen peroxide. Therefore, as the concentration of hydrogen peroxide can be determined the concentration of the glucose can also be determined. A study was conducted to use the Chromium Hexacyanoferrate to modify the carbon paste electrode. The CV (Cyclic Voltammetry) graphs were plotted for the carbon paste electrode modified with Chromium Hexacyanoferrate ( Chromium Hexacyanoferrate : graphite carbon powders : carbon paste = 0.3 : 0.7 : 1) and the unmodified carbon paste electrode. At 30℃, 700rpm stirring rate and in 0.05 M phosphate buffer solution , the TB (Time Base) graphs for the carbon paste electrode at different pH of buffer solutions were plotted to evaluate the effect of the pH of buffer solutions on the responding current of detection of hydrogen peroxide. At the optimum operating conditions -200mV operating potential, 700 rpm stirring rate and in 0.05M PBS buffer solution ( pH = 7.4 ) , the detection limit was 0.02 mM H2O2 , the linear range was 0.02~2.8 mM H2O2 , R2 = 0.9999 and the sensitivity was 242.57µA/cm2.mM H2O2.


檔案名稱
FileName
檔案大小
Size
檔案格式
Format
瀏覽次數
Browses
下載次數
Downloads
2011_5_cf2bc2cc.ppt 1742Kb ppt 214 57
文件中檔案:
 

開啟檔案Download
 
 
返回前一頁