scholarly journals Modified Graphite Paste Electrode with Strontium Phen-Dione Complex for Simultaneous Determination of a Ternary Mixture of Dopamine, Acetaminophen and Xanthine. Part II

2017 ◽  
pp. 11763-11777 ◽  
Author(s):  
M Shahbakhsh ◽  
Keyword(s):  
Simultaneous Determination ◽  
Ternary Mixture ◽  
Graphite Paste Electrode ◽  
Paste Electrode

Electrochemical Determination of Brilliant Blue and Tartrazine Based on an Ionic Liquid-Modified Expanded Graphite Paste Electrode

2015 ◽  
Vol 98 (3) ◽  
pp. 817-821 ◽  
Author(s):  
Wenchang Wang ◽  
Ye Chen ◽  
Jing Zhang ◽  
Xue Wang ◽  
Zhidong Chen
Keyword(s):  
Ionic Liquid ◽  
Simultaneous Determination ◽  
Soft Drink ◽  
Expanded Graphite ◽  
Brilliant Blue ◽  
Experimental Conditions ◽  
Graphite Composite ◽  
Graphite Paste Electrode ◽  
Paste Electrode

Abstract A sensitive electrochemical method was developed for the simultaneous determination of Brilliant Blue (BB) and tartrazine (Tz) using an ionic liquid-modified expanded graphite paste electrode (IL-EGPE). The IL-EGPE was prepared by mixing ionic liquid-expanded graphite composite (IL-EG) with solid paraffin. Compared with the EGPE, the IL-EGPE remarkably enhanced the electrocatalytic oxidation signals of BB and Tz. Under optimal experimental conditions, the designed IL-EGPE exhibited wide linear responses to BB and Tz ranging from 5.0 × 10–9 to 4.0 × 10–6 M and 1.0 × 10–8 to 1.0 × 10–6 M, respectively. The detection limits for BB and Tz were 2.0 × 10–9 M (1.6 ng/mL) and 3.3 × 10–9 M (1.8 ng/mL) at an S/N of 3, respectively. This electrode showed good reproducibility, stability, and reusability. The proposed method was successfully applied in the simultaneous determination of BB and Tz in a soft drink with satisfactory results.

Graphite paste electrode modified with Lewatit® FO36 nano-resin for simultaneous determination of ascorbic acid, acetaminophen and tryptophan

2016 ◽  
Vol 8 (8) ◽  
pp. 1924-1934 ◽  
Author(s):  
Hossein Rajabi ◽  
Meissam Noroozifar ◽  
Mozhgan Khorasani-Motlagh
Keyword(s):  
Ascorbic Acid ◽  
Simultaneous Determination ◽  
Graphite Paste Electrode ◽  
Paste Electrode

TEM of surface of graphite paste electrode, modified with LFOR for simultaneous determination of ascorbic acid, acetaminophen and tryptophan.

Simultaneous determination of the isomers of Ponceau 4R and Amaranth using an expanded graphite paste electrode

2014 ◽  
Vol 160 ◽  
pp. 11-15 ◽  
Author(s):  
Jing Zhang ◽  
Meiling Wang ◽  
Chao Shentu ◽  
Wenchang Wang ◽  
Zhidong Chen
Keyword(s):  
Simultaneous Determination ◽  
Expanded Graphite ◽  
Graphite Paste Electrode ◽  
Ponceau 4R ◽  
Paste Electrode
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