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Chitosan/Colloid Au Modified Gold Film Microelectrode for Iodide Determination

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Figure

Figure 1. TEM images of (A) nano-Au colloid, (B) chitosan/colloid Au composite.
Figure 2.  SEM images of the surface of (A) the bare gold microelectrode and (B) the chitosan/colloid Au modified gold microelectrode
Figure 3.  (A) EIS response of the mixture modified electrode (a), the chitosan modified electrode (b), and the bare electrode (c), in a 5.0×103 mol·L1 K3[Fe(CN)6] solution containing 0.1 mol·L1KCl
Figure 4.  Optimization of the experiment conditions: (A) Influence of the test solution pH on the current response of the chitosan/colloid Au modified electrode toward 6.73×105 mol·L1 I in 0.1 mol·L1 KH2PO4 solution; (B) The effect of absorption time
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