Determination of sodium sulfide based on electrochemiluminescence of rhodamine B at a SWNT modified glassy carbon electrode

RSC Advances ◽  
2014 ◽  
Vol 4 (32) ◽  
pp. 16893-16898
Author(s):  
Fengyu Liu ◽  
Yulong Gao ◽  
Wei Li ◽  
Jiantao Shao ◽  
Yang Meng
Keyword(s):  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Rhodamine B ◽  
Sodium Sulfide ◽  
Carbon Electrode ◽  
Good Reproducibility ◽  
Modified Glassy Carbon Electrode ◽  
Covalently Linked

Rhodamine B (RhB) was covalently linked with SWNTs through different linkages and modified on a glassy carbon (GC) electrode to detect sodium sulfide with good reproducibility and stability.

Sensitive Electrochemical Determination of Rhodamine B Based on a Silica-Pillared Zirconium Phosphate/Nafion Composite Modified Glassy Carbon Electrode

2016 ◽  
Vol 99 (3) ◽  
pp. 760-765 ◽  
Author(s):  
Jing Zhang ◽  
Liu Zhang ◽  
Wenchang Wang ◽  
Zhidong Chen
Keyword(s):  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Rhodamine B ◽  
Zirconium Phosphate ◽  
Layer Structure ◽  
Electrochemical Determination ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Experimental Conditions

Abstract A sensitive and convenient electrochemical method was developed for the determination of rhodamine B by a silica-pillared zirconium phosphate/nafion composite (SPZP/NAF) modified glassy carbon electrode. The SPZP was characterized with scanning electron microscopy and X-ray diffraction. Because of the layer structure and large specific surface area of SPZP, the SPZP/NAF modified glassy carbon electrode showed high electrocatalytic activity toward the oxidation of rhodamine B. Under optimal experimental conditions, the SPZP/NAF modified electrode exhibited a wide linear response to rhodamine B ranging from 0.01 to 5.0 μM and a low detection limit down to 4.3 nM (S/N = 3). This method showed good accuracy, acceptable precision, and reproducibility. This electrode had been applied in the determination of rhodamine B in preserved fruit and chili powder samples. The proposed method provided a useful tool for the assay of rhodamine B in food samples.

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