An inlaying ultra-thin carbon paste electrode modified with functional single-wall carbon nanotubes for simultaneous determination of three purine derivatives

Wang, Zhenhui; Dong, Xiaopeng; Li, Jing

doi:10.1016/j.snb.2007.11.056

Cited by 43 publications

(15 citation statements)

References 31 publications

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“…More recently, an inlaying ultra-thin carbon paste electrode modified with functional single-wall carbon nanotubes was developed for simultaneous determination of three purine derivatives [50]. To achieve good selectivity and sensitivity, other workers utilised fast scan voltammetry (FSV) at bare carbon fibre electrodes [55].…”

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confidence: 99%

Electrochemical Detection of Uric Acid in Mixed and Clinical Samples: A Review

et al. 2011

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The present review has sought to explore the technological advances that have been made in recent years towards the selective analysis of uric acid and critically evaluate how they could, in fact, be exploited as a basis for a multi analyte sensor incorporating uric acid detection. Numerous strategies have evolved in recent years but these have invariably focused on the manufacture and response characterization of discrete sensors. Various methods of obtaining selective detection such as use of uricase enzymes, nanoparticles, carbon nanotubes, polymers, conducting polymers and MIPs are also discussed along with the clinical relevance of UA determination.

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confidence: 99%

Electrochemical Detection of Uric Acid in Mixed and Clinical Samples: A Review

et al. 2011

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“…It can be seen that there are regular grooves distributed on its surface. Carbon paste can only be inlayed effectively to constitute a uniform IUCP film with the presence of these long and narrow grooves [29]. Figure 1B shows the SEM image of the IUCP film on nichrome substrate after shake and pitch from the 40 cm height, which indicates that the IUCP film is very stable and firm.…”

Section: Physical Characterizationmentioning

confidence: 99%

“…Then, its surface properties were examined by cyclic voltammetry using K 4 3À appears at about 0.3 V and the corresponding reduction one is minor. This is because the nichrome is too hard to be served as the working electrode for electroanalysis, directly [28,29]. A pair of evident oxidation -reduction peaks is observed at the non-preanodized IUCPE (curve b).The oxidation peak potential appears at 0.33 V and the reduction one at 0.17 V, respectively.…”

Section: The Electrochemical Properties Of Paiucpementioning

confidence: 99%

Simultaneous Determination of Dihydroxybenzene Isomers Using Preanodized Inlaying Ultrathin Carbon Paste Electrode

et al. 2010

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In this paper, we described a rapid, sensitive and selective method for simultaneous voltammetric determination of dihydroxybenzene isomers with a preanodized inlaying ultrathin carbon paste electrode (PAIUCPE). Scanning electron microscope (SEM), electrochemical impedance spectroscopy (EIS) and voltammetry were employed to characterize the configuration and electrochemical properties of the electrode. The resulting PAIUCPE exhibited excellent recognition ability towards dihydroxybenzene isomers. Three well-defined oxidation peaks of catechol (CC), resorcinol (RC) and hydroquinone (HQ) can be identified entirely at the electrode. The oxidation peak potential difference between HQ and CC was 120 mV, CC and RC 430 mV, respectively. The peak currents increased linearly with increasing the concentration of dihydroxybenzene isomers. The proposed electrode can be applied to simultaneous determination of dihydroxybenzene isomers without previous chemical or physical separations.

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“…In brief, this paper focuses on the influencing mechanisms of the PAIUCEP on electrochemical oxidation of Xa and HXa, as well as the simultaneous determination of the Xa and HXa in human urine. Compared to the electrodes used in literatures, [9][10][11][12][13][14] this electrode is simple to prepare, low cost and avoids complex modification. Therefore, it is easier to popularize in conventional laboratory, and has a wide application prospect in the future.…”

Section: Introductionmentioning

confidence: 99%

The Influencing of Preanodized Inlaying Ultrathin Carbon Paste Electrode on the Oxidation for the Xanthine and Hypoxanthine by the Hydrogen Bond

Qiao

et al. 2015

J Chinese Chemical Soc

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In this paper, a pre-anodized inlaying ultrathin carbon paste electrode (PAIUCPE) with 316L as a matrix was constructed by a simple and fast electrochemical pretreatment. Using xanthine (Xa) and hypoxanthine (HXa) as the target compounds, the pH effects compositions of buffer solution, the accumulation times, hydrogen bond catalysis, degree of auxiliary electrode reaction on the size of peak currents (I p ) of Xa and HXa was discussed in detail. Also, it was proposed that Xa and HXa were respectively absorbed at the surface of PAIUCPE through hydrogen bonding. The influencing mechanisms of the PAIUCEP on electrochemical oxidation of Xa and HXa were explained in detail. Moreover, the linear relationships for the Xa and HXa were obtained in the range of 6´10 -8 -3´10 -5 mol/L and 2´10 -7 -7´10-5 mol/L, respectively. The detection limits for the Xa and HXa were 1.2´10 -8 mol/L and 5.7´10 -8 mol/L, respectively. Moreover, this proposed method could be applied to determine the Xa and HXa in human urine simultaneously with satisfactory results.

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An inlaying ultra-thin carbon paste electrode modified with functional single-wall carbon nanotubes for simultaneous determination of three purine derivatives

Cited by 43 publications

References 31 publications

Electrochemical Detection of Uric Acid in Mixed and Clinical Samples: A Review

Electrochemical Detection of Uric Acid in Mixed and Clinical Samples: A Review

Simultaneous Determination of Dihydroxybenzene Isomers Using Preanodized Inlaying Ultrathin Carbon Paste Electrode

The Influencing of Preanodized Inlaying Ultrathin Carbon Paste Electrode on the Oxidation for the Xanthine and Hypoxanthine by the Hydrogen Bond

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