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Sensitive determination of adenine on poly(amidosulfonic acid)-modified glassy carbon electrode
A novel and reliable direct electrochemical method was established for the detection of adenine, based on the differential pulse anodic stripping response at a poly(amidosulfonic acid) (poly-ASA)-modified glassy carbon electrode (GCE) fabricated by electropolymerization. The characterization of elec...
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Published in: | Journal of solid state electrochemistry 2009-10, Vol.13 (10), p.1545-1552 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | A novel and reliable direct electrochemical method was established for the detection of adenine, based on the differential pulse anodic stripping response at a poly(amidosulfonic acid) (poly-ASA)-modified glassy carbon electrode (GCE) fabricated by electropolymerization. The characterization of electrochemically synthesized poly-ASA film was investigated by atomic force microscopy, electrochemical impedance spectroscopy, and voltammetric methods. This poly-ASA-modified GCE could greatly enhance the detection sensitivity of adenine. At optimum conditions, the anodic peak exhibits a good linear concentration dependence in the range from 3.0 × 10
−8
to 1.0 × 10
−6
M (
r
= 0.9994). The detection limit is 8.0 × 10
−9
M (
S
/
N
= 3). The proposed method could be used to determinate the adenine in tablets of vitamin B
4
with satisfactory results. |
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ISSN: | 1432-8488 1433-0768 |
DOI: | 10.1007/s10008-008-0726-9 |