Voltammetric determination of phytoinhibitor maleic hydrazide using PEDOT:PSS composite electrode

Zhang, Jie; Xu, Jingkun; Wen, Yangping; Wang, Zifei; Zhang, Hui; Ding, Waverly W.

doi:10.1016/j.jelechem.2015.05.032

Cited by 37 publications

(19 citation statements)

References 57 publications

(75 reference statements)

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“…Obviously, a pair of well-defined redox peaks were observed when the rGO@Pd was modified the surface of the bare GCE, and the rGO@Pd displayed superior electrocatalytic ability for the electrochemical oxidation-reduction of VK 3 owing to the synergetic electrocatalytic effect of both graphene and nano noble metals. The introduction of CMC had great effect on the electrochemical oxidation-reduction of VK 3 compared with both CMC-rGO@Pd/GCE and PEDOT:PSS-CMC/GCE because the non-conducting CMC hindered the fast electron transfer of rGO@Pd and both CMC synergistically enhanced the electrocatalytic ability of PEDOT:PSS, which was in agreement with our previous reports [29,33,39]. In comparison with…”

Section: Electrochemical Behaviors Of Vksupporting

confidence: 90%

“…However, The Rct of rGO@Pd-CMC/GCE increased dramatically when CMC was added (590 Ω, curve b), which was ascribed to bad conductivity of CMC. The introduction of non-conducting CMC resulted in the increasing Rct of other inorganic nano-materials, especially semiconductor, these results were in accordance with that in our previous reports[33,39]. The Nyquist plots of PEDOT:PSS/GCE (curve e) exhibited a nearly straight line, revealing that high electrical conductivity of PEDOT:PSS promoted the electron transfer.…”

supporting

confidence: 91%

“…Surprisingly, the Nyquist plots of PEDOT:PSS-CMC/GCE (curve f) presented also a nearly straight line, the main difference was that the slope of straight line of PEDOT:PSS-CMC/GCE was larger than that of PEDOT:PSS/GCE, which was assigned to the role of CMC in the PEDOT:PSS film. CMC has bad conductivity, but it could enhance the conductivity of CPs especially PEDOT:PSS when was as a dopant[29,33].Moreover, The impedance of PEDOT:PSS-CMC-Pd-rGO/GCE is very close to that of PEDOT:PSS-CMC/GCE. The results manifested that high electrical conductivity of PEDOT:PSS and the synergistic enhanced effect of different components made it easier for fast electron transfer.…”

mentioning

confidence: 83%

“…seven electrodes was also investigated in the same conditions (Fig 7B), and the several electrodes were evaluated independently, and its values of RSD was 1.44%, indicating the PEDOT:PSS-CMC-rGO@Pd/GCE had good reproducibility. The excellent reproducibility and repeatability revealed the high sensing stability of PEDOT:PSS-rGO@Pd/GCE/GCE, This is mainly because CMC extensively enhanced the adhesive force of electrode interface and the electrode stability of sensing element [29,33,39].…”

Section: Detection Of Vkmentioning

confidence: 96%

“…Moreover, inorganic nanomaterials like carbon nanotubes, graphene can improve the performance of sensors based on PEDOT:PSS composite film electrodes [31][32][33]. Although CMC successfully settled the issue of PEDOT:PSS film electrode, It is difficult to for the electrochemical oxidation and/or reduction of weak electroactive analytes due to its poor electrocatalytic ability.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

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Characterization of PEDOT:PSS-reduced graphene oxide@Pd composite electrode and its application in voltammetric determination of vitamin K3

Zhang

et al. 2016

Journal of Electroanalytical Chemistry

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Vitamin K 3 (VK 3 ), a synthetic blood coagulation vitamin with fat-solubility, easily results in side-effect in animal body due to its toxicity and improper addition of animal feedstuffs. In this study, a novel sensor based on glassy carbon electrode (GCE) modified with a conducting polymer-both nano-noble metals and two-dimensional nano-carbon composite consisting of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS), carboxymethyl cellulose (CMC) and reduced graphene oxide@palladium (rGO@Pd) was successfully used for the voltammetric detection of VK 3 in animal blood and feedstuff samples. Under the optimized conditions, PEDOT:PSS-CMC-rGO@Pd/GCE/GCE displayed the excellent synergistically electrocatalytic ability for the electrochemical oxidation-reduction of VK 3 , which exhibited a good voltammetric response for VK 3 in the concentration range from 4 × 10 -7 to 9 × 10 -5 M, with a limit of detection of 1.4 × 10 -8 M. Furthermore, a facile preparation, high sensitivity, good selectivity, superior sensing stability, and satisfactory practicability of PEDOT:PSS-CMC-rGO@Pd/GCE/GCE for sensing VK 3 suggested that the potential applicability of PEDOT:PSS-CMC-rGO@Pd provided a promising electrochemical sensing platform for the determination of VK 3 in pharmaceutical and feed inspection.

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Section: Electrochemical Behaviors Of Vksupporting

confidence: 90%

supporting

confidence: 91%

mentioning

confidence: 83%

Section: Detection Of Vkmentioning

confidence: 96%

Section: Accepted Manuscriptmentioning

confidence: 99%

See 3 more Smart Citations

Characterization of PEDOT:PSS-reduced graphene oxide@Pd composite electrode and its application in voltammetric determination of vitamin K3

Zhang

et al. 2016

Journal of Electroanalytical Chemistry

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Nickel‐Based Metal‐Organic Framework/Crosslinked Tubular Poly(3,4‐ethylenedioxythiophene) Composite as an Electrocatalyst for the Detection of Gallic Acid and Tinidazole

et al. 2020

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In memory of Prof. Jingdong Zhang Nickel-based metal-organic framework (Ni-MOF) embedded in tubular poly(3,4-ethylenedioxythiophene) (T-PEDOT) composites was first synthesized through the in situ growth of Ni-MOF with T-PEDOT. The incorporation of T-PEDOT and Ni-MOF enhances the conductivity of Ni-MOF/T-PEDOT, reduces aggregation and restricts the size of Ni-MOF, and exposes more active sites of the Ni-MOF. Compared with Ni-MOF, Ni-MOF/T-PEDOT manifests improved electrocatalytic activity toward the oxidation and reduction of gallic acid and tinidazole, respectively. The Ni-MOF/T-PEDOT-2/glassy carbon electrode (GCE) as a novel electrochemical sensor was constructed to detect two antibacterial drugs. Ni-MOF/T-PEDOT-2/GCE shows two linear responses to gallic acid in the range of 0.8-25.5 μM and 25.5-150 μM, with a high sensitivity of 0.559 μA μM À 1. At the same time, Ni-MOF/T-PEDOT-2/GCE exhibits two linear responses to tinidazole in the range of 0.7-35 μM and 35-255 μM. Therefore, Ni-MOF/T-PEDOT-2/GCE could be used to detect gallic acid and tinidazole in real samples with satisfactory results. Recovery values varied from 95.1 to 104.2 % for gallic acid sensing and 94.2 to 104.2 % for tinidazole sensing, which demonstrates that the sensor has practical application for gallic acid and tinidazole detection. Our work offers an efficient strategy for fabricating a new electrocatalysts based on MOFs and tubular conductive polymer.

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Use of autoclave extraction and liquid chromatography with tandem mass spectrometry for determination of maleic hydrazide residues in tobacco

Deng

Bian

Yang

et al. 2019

J of Separation Science

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Maleic hydrazide has been extensively used as an effective growth regulator in tobacco sucker control. After application, maleic hydrazide distributes itself throughout the tobacco plant where it can exist as free, or forms glucoside conjugates with glucose, or becomes bound with lignin. Among them, free maleic hydrazide and its glucoside conjugates are extractable under conventional solvent extraction, while lignin bound maleic hydrazide is claimed to be non-extractable. Herein, an autoclave extraction method has been developed to extract maleic hydrazide effectively, in which tobacco samples are extracted in an autoclave at 130 • C for 1 h using 4 M hydrochloric acid.Under such pressurized hot acidic water conditions, lignin bound maleic hydrazide can be released. Meanwhile, glucoside conjugates are hydrolyzed. Total maleic hydrazide is detected by liquid chromatography coupled with tandem mass spectrometry, and the quantitative results coincide well with that obtained from the international standard method. The proposed autoclave extraction with liquid chromatography and tandem mass spectrometry method exhibits excellent linearity in the range of 5-200 mg/kg (R 2 = 0.9998), the matrix matched limit of detection and limit of quantification is 0.68 and 2.27 mg/kg, respectively. This method is simple and improves sample capacity, providing an effective approach to monitoring maleic hydrazide residues in tobacco. K E Y W O R D Sautoclave extraction, liquid chromatography, maleic hydrazide, tandem mass spectrometry, tobacco 2390

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Voltammetric determination of phytoinhibitor maleic hydrazide using PEDOT:PSS composite electrode

Cited by 37 publications

References 57 publications

Characterization of PEDOT:PSS-reduced graphene oxide@Pd composite electrode and its application in voltammetric determination of vitamin K3

Characterization of PEDOT:PSS-reduced graphene oxide@Pd composite electrode and its application in voltammetric determination of vitamin K3

Nickel‐Based Metal‐Organic Framework/Crosslinked Tubular Poly(3,4‐ethylenedioxythiophene) Composite as an Electrocatalyst for the Detection of Gallic Acid and Tinidazole

Use of autoclave extraction and liquid chromatography with tandem mass spectrometry for determination of maleic hydrazide residues in tobacco

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