Determination of uric acid in biological samples on the pretreated pencil graphite electrode

2012 ◽  
Vol 4 (8) ◽  
pp. 2288 ◽  
Author(s):  
Esmaeel Alipour ◽  
Mir Reza Majidi ◽  
Afsaneh Saadatirad ◽  
Sayed Mahdi Golabi
Keyword(s):  
Uric Acid ◽  
Biological Samples ◽  
Graphite Electrode ◽  
Pencil Graphite Electrode

Simultaneous determination of dopamine and uric acid in biological samples on the pretreated pencil graphite electrode

2013 ◽  
Vol 91 ◽  
pp. 36-42 ◽  
Author(s):  
Esmaeel Alipour ◽  
Mir Reza Majidi ◽  
Afsaneh Saadatirad ◽  
Sayed mahdi Golabi ◽  
Ali Mohammad Alizadeh
Keyword(s):  
Uric Acid ◽  
Simultaneous Determination ◽  
Biological Samples ◽  
Graphite Electrode ◽  
Pencil Graphite Electrode

Modification of a disposable pencil graphite electrode with multiwalled carbon nanotubes: application to electrochemical determination of diclofenac sodium in some pharmaceutical and biological samples

2016 ◽  
Vol 8 (19) ◽  
pp. 3966-3974 ◽  
Author(s):  
Golnaz Parvizi Fard ◽  
Esmaeel Alipour ◽  
Reza Emam Ali Sabzi
Keyword(s):  
Carbon Nanotubes ◽  
Electrochemical Sensor ◽  
Multiwalled Carbon Nanotubes ◽  
Biological Samples ◽  
Graphite Electrode ◽  
Diclofenac Sodium ◽  
Electrochemical Determination ◽  
Pencil Graphite Electrode ◽  
Multiwalled Carbon

A MWCNTs/PGE was developed as an electrochemical sensor and used for the determination of diclofenac sodium (DIC).

Development of a novel voltammetric sensor for the determination of methamphetamine in biological samples on the pretreated pencil graphite electrode

RSC Advances ◽  
2015 ◽  
Vol 5 (13) ◽  
pp. 9674-9682 ◽  
Author(s):  
Abbas Hassan Oghli ◽  
Esmaeel Alipour ◽  
Mojtaba Asadzadeh
Keyword(s):  
Biological Samples ◽  
Graphite Electrode ◽  
Pencil Graphite Electrode ◽  
Voltammetric Sensor

We developed a simple and reliable sensor for the determination of methamphetamine without expensive and time-consuming pretreatments using PPGE.

scholarly journals Affordable voltammetric sensor based on anodized disposable pencil graphite electrodes for sensitive determination of dopamine and uric acid in presence of high concentration of ascorbic acid

2020 ◽  
Author(s):  
Preethi Sankaranarayanan ◽  
Sangaranarayanan V. Venkateswaran
Keyword(s):  
Ascorbic Acid ◽  
Uric Acid ◽  
Graphite Electrode ◽  
Limit Of Detection ◽  
Simultaneous Detection ◽  
Pencil Graphite Electrode ◽  
Voltammetric Sensor ◽  
High Concentration ◽  
Graphite Electrodes

<p class="PaperAbstract">A simple, disposable and low - cost voltammetric sensor based on the anodized pencil graphite electrode (APGE) for the simultaneous determination of dopamine (DA) and uric acid (UA) is demonstrated. The physico-chemical properties of the pencil graphite electrode (PGE) before and after anodization were analyzed using FT-IR, FT-Raman, SEM and EIS characterization techniques. In comparison to PGE, APGE exhibited excellent electrochemical activity towards the simultaneous detection of DA and UA with peak-to-peak separation of about 0.18 V even in the presence of high concentration (2 mM) of ascorbic acid (AA). The discrimination of APGE towards AA was rationalized through the absence of favorable surface interactions between oxygen rich functional groups on the surface of APGE and AA. Using DPV without any pre-concentration step and under optimized conditions, APGE displayed a linear range of 1 – 80 μM with an estimated limit of detection (LOD, 3σ/m) of 0.008 μM and 0.014 μM for DA and UA, respectively. Moreover, a higher sensitivity in comparison to other previously reported pretreated pencil graphite electrodes was observed for DA (34.32 μA/μM) and UA (12.33 μA/μM). The practical applicability of APGE was demonstrated through the estimation of DA in human blood serum and UA in urine samples.</p>

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