Citation:
Mohsen Keyvanfard, Maryam Ahmadi, Fatemeh Karimi, Khadijeh Alizad. Voltammetric determination of cysteamine at multiwalled carbon nanotubes paste electrode in the presence of isoproterenol as a mediator[J]. Chinese Chemical Letters,
;2014, 25(9): 1244-1246.
doi:
10.1016/j.cclet.2014.05.018
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A sensitive electrochemical sensor for the determination of cysteamine (CA) was developed using a modified multiwall carbon nanotube paste electrode (MWCNTPE) with isoproterenol (ISPT) as a mediator. This modified electrode showed very high electrocatalytic activity for the anodic oxidation of CA. Under the optimized conditions, the electrocatalytic peak current showed a linear relationship with CA concentration in the range of 0.3-450.0 μmol/L with a detection limit of 0.09 μmol/L CA. The modified electrode was used for the determination of CA in real samples such as urine and drug samples.
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