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Simultaneous and sensitive determination of a quaternary mixture of AA, DA, UA and Trp using a modified GCE by iron ion-doped natrolite zeolite-multiwall carbon nanotube.
Biosens Bioelectron. 2011 Oct 15; 28(1):56-63.BB

Abstract

The evaluation of a novel modified glassy carbon electrode modified with iron ion-doped natrolite zeolite-multiwalled carbon nanotube for the simultaneous and sensitive determination of ascorbic acid (AA), dopamine (DA), uric acid (UA) and tryptophan (Trp) has been described. The measurements were carried out using cyclic voltammetry in buffer solution with pH 1. This modified electrode exhibits potent and persistent electroxidation behavior followed by well-separated oxidation peaks towards AA, DA, UA and Trp with increasing of the oxidation current. For the quaternary mixture containing AA, DA, UA and Trp, the 4 compounds can well separate from each other at the scan rate of 100 mVs(-1) with a potential difference of 270 mV, 150 mV and 260 mV for the oxidation peak potentials of AA-DA, DA-UA and UA-Trp, respectively, which was large enough to simultaneous determine AA, DA, UA and Trp. The catalytic peak current obtained, was linearly dependent on the AA, DA, UA and Trp concentrations in the range of 7.77-833 μM, 7.35-833 μM, 0.23-83.3 μM and 0.074-34.5 μM and the detection limits for AA, DA, UA and Trp were 1.11, 1.05, 0.033 and 0.011 μM, respectively. The analytical performance of this sensor has been evaluated for simultaneous detection of AA, DA, UA and Trp in human serum and urine samples.

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Authors+Show Affiliations

Noroozifar M
Analytical Research Laboratory, Department of Chemistry, University of Sistan & Baluchestan, PO Box 98155-147, Zahedan, Iran. mnoroozifar@chem.usb.ac.ir
Khorasani-Motlagh M
No affiliation info available
Akbari R
No affiliation info available
Bemanadi Parizi M
No affiliation info available

MeSH

Ascorbic AcidBiosensing TechniquesCalibrationDopamineElectrochemistryElectrodesHydrogen-Ion ConcentrationMicroscopy, Electron, ScanningMicroscopy, Electron, TransmissionNanotubes, CarbonOxidation-ReductionTryptophanUric AcidZeolites

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21807496

Citation

Noroozifar, Meissam, et al. "Simultaneous and Sensitive Determination of a Quaternary Mixture of AA, DA, UA and Trp Using a Modified GCE By Iron Ion-doped Natrolite Zeolite-multiwall Carbon Nanotube." Biosensors & Bioelectronics, vol. 28, no. 1, 2011, pp. 56-63.
Noroozifar M, Khorasani-Motlagh M, Akbari R, et al. Simultaneous and sensitive determination of a quaternary mixture of AA, DA, UA and Trp using a modified GCE by iron ion-doped natrolite zeolite-multiwall carbon nanotube. Biosens Bioelectron. 2011;28(1):56-63.
Noroozifar, M., Khorasani-Motlagh, M., Akbari, R., & Bemanadi Parizi, M. (2011). Simultaneous and sensitive determination of a quaternary mixture of AA, DA, UA and Trp using a modified GCE by iron ion-doped natrolite zeolite-multiwall carbon nanotube. Biosensors & Bioelectronics, 28(1), 56-63. https://doi.org/10.1016/j.bios.2011.06.042
Noroozifar M, et al. Simultaneous and Sensitive Determination of a Quaternary Mixture of AA, DA, UA and Trp Using a Modified GCE By Iron Ion-doped Natrolite Zeolite-multiwall Carbon Nanotube. Biosens Bioelectron. 2011 Oct 15;28(1):56-63. PubMed PMID: 21807496.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Simultaneous and sensitive determination of a quaternary mixture of AA, DA, UA and Trp using a modified GCE by iron ion-doped natrolite zeolite-multiwall carbon nanotube. AU - Noroozifar,Meissam, AU - Khorasani-Motlagh,Mozhgan, AU - Akbari,Reza, AU - Bemanadi Parizi,Mojtaba, Y1 - 2011/07/06/ PY - 2011/03/13/received PY - 2011/06/14/revised PY - 2011/06/28/accepted PY - 2011/8/3/entrez PY - 2011/8/3/pubmed PY - 2012/1/24/medline SP - 56 EP - 63 JF - Biosensors & bioelectronics JO - Biosens Bioelectron VL - 28 IS - 1 N2 - The evaluation of a novel modified glassy carbon electrode modified with iron ion-doped natrolite zeolite-multiwalled carbon nanotube for the simultaneous and sensitive determination of ascorbic acid (AA), dopamine (DA), uric acid (UA) and tryptophan (Trp) has been described. The measurements were carried out using cyclic voltammetry in buffer solution with pH 1. This modified electrode exhibits potent and persistent electroxidation behavior followed by well-separated oxidation peaks towards AA, DA, UA and Trp with increasing of the oxidation current. For the quaternary mixture containing AA, DA, UA and Trp, the 4 compounds can well separate from each other at the scan rate of 100 mVs(-1) with a potential difference of 270 mV, 150 mV and 260 mV for the oxidation peak potentials of AA-DA, DA-UA and UA-Trp, respectively, which was large enough to simultaneous determine AA, DA, UA and Trp. The catalytic peak current obtained, was linearly dependent on the AA, DA, UA and Trp concentrations in the range of 7.77-833 μM, 7.35-833 μM, 0.23-83.3 μM and 0.074-34.5 μM and the detection limits for AA, DA, UA and Trp were 1.11, 1.05, 0.033 and 0.011 μM, respectively. The analytical performance of this sensor has been evaluated for simultaneous detection of AA, DA, UA and Trp in human serum and urine samples. SN - 1873-4235 UR - https://www.unboundmedicine.com/medline/citation/21807496/Simultaneous_and_sensitive_determination_of_a_quaternary_mixture_of_AA_DA_UA_and_Trp_using_a_modified_GCE_by_iron_ion_doped_natrolite_zeolite_multiwall_carbon_nanotube_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0956-5663(11)00406-4 DB - PRIME DP - Unbound Medicine ER -
Grapherence [↓10]

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