Electrochemical characterization of cetyltrimethyl ammonium bromide modified carbon paste electrode and the application in the immobilization of DNA

2004 ◽  
Vol 49 (3) ◽  
pp. 405-412 ◽  
Author(s):  
Chengguo Hu ◽  
Shengshui Hu
Keyword(s):  
Carbon Paste Electrode ◽  
Electrochemical Characterization ◽  
Modified Carbon Paste Electrode ◽  
Ammonium Bromide ◽  
Carbon Paste ◽  
Cetyltrimethyl Ammonium Bromide ◽  
Cetyltrimethyl Ammonium ◽  
Paste Electrode

A Novel Method to Determinate Nonylphenol Contents in Water Samples Based on Laccases Cetyltrimethyl Ammonium Bromide-Carbon Paste Electrode

2012 ◽  
Vol 550-553 ◽  
pp. 2009-2013
Author(s):  
Yan Qun Liu ◽  
Jian Jun Ding ◽  
Yong Liang ◽  
Wen Hong Qiu ◽  
Feng Luo ◽  
...  
Keyword(s):  
Carbon Paste Electrode ◽  
Food Processing ◽  
Ammonium Bromide ◽  
Carbon Paste ◽  
Cetyltrimethyl Ammonium Bromide ◽  
Minimum Detectable Limit ◽  
Novel Method ◽  
Cetyltrimethyl Ammonium ◽  
Optimized Conditions ◽  
Paste Electrode

The eznyme biosensor(EB) as a sort of biosensors are widely used analyse target substances from samples of medicine, environment and food processing in recent years. During the EB preparation, effective immobilization of enzyme is a key step related with the activity of enzyme and the lifetime of EB. In current research, a method to determine nonylphenol(NP) contents in the water samlples has been developed on the base of laccases cetyltrimethyl ammonium bromide -carbon paste electrode. The experimental results showed that the EB developed in this optimized conditions, its minimum detectable limit could reach 0.2µg／L, and the recovery was in the range from 91% to 109% at the concentrations form 3.0×10-4 mol.L-1 to 5.0×10-6 mol.L-1. The sensor is perfect which is convenient, effective, and cheap and really can be used practice.

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