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Simultaneous Determination of Folic Acid and Uric Acid under Coexistence of L-Ascorbic Acid Using a Modified Electrode Based on Poly(3,4-Ethylenedioxythiophene) and Functionalized Single-Walled Carbon Nanotubes Composite

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Academic year: 2019

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Figure

Figure 1.  FT-IR of (a) β-CD、(b) PEDOT、(c) SWCNT、(d) β-CD-SWCNT and (e) PEDOT/β-CD-SWCNT films
Figure 2.  (A) Cyclic voltammograms of (a) bare GCE、(b) β-CD/GCE、(c) β-CD-SWCNT/GCE and (d) PEDOT/β-CD-SWCNT/GCE in 5.0 mM Fe(CN)63-/4- (1:1) containing 0.1 M KCl
Figure 3.  Cyclic voltammograms of (a) bare GCE、(b) PEDOT/GCE、(c) SWCNT/GCE、(d) β-CD-SWCNT/GCE 、 (e) PEDOT-SWCNT/GCE and (f) PEDOT/β-CD-SWCNT/GCE in the absence and presence 0.3 mM FA, 0.2 m M UA and 0.35 mM AA in 0.1 M PBS (pH 5.0)
Figure 4.   (A) Differential pulse voltammetrys of PEDOT/β-CD-SWCNT/GCE in PBS at different pHs from 4 to 8 in the presence of 0.2 mM FA, 0.3 mM UA and 0.5 mM AA; (B) The peak current (a) and peak potential (b) of FA with solution pH; (C) The peak current
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