Abstract
A sensitive and selective electrochemical method for the simultaneous determination of dopamine (DA) and uric acid (UA) was developed using a pyrogallol red modified carbon paste electrode. Under the optimized conditions, the peak current was linearly dependent on 1.0–700.0 μmol L−1 DA and 50.0–1000.0 μmol L−1 UA. The detection limits for DA and UA were 0.78 μmol L−1 and 35 μmol L−1, respectively. Finally, this method was also examined for the determination of DA and uric acid in real samples such as drugs and urine.
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