One-step electrochemical approach for the preparation of graphene wrapped-phosphotungstic acid hybrid and its application for simultaneous determination of sunset yellow and tartrazine

An enhanced electrochemical platform based on graphene oxide and multi-walled carbon nanotubes nanocomposite for sensitive determination of Sunset Yellow and Tartrazine

“…Meanwhile, the redox peaks have almost no shift with the change of scan rate, therefore, the redox process of SY at GO/MWCNTs/GCE can be considered to be reversible. According to the equation (Gan et al, 2012):…”

“…On the other hand, the SY and TT always coexist together to restore the yellow color, so the development of simultaneous determination method for them based on electrochemical technique is necessary (Gan et al, 2012). In recent years, different modified electrodes were developed for the electrochemical determination of SY and TT such as MWCNT modified GCE (Zhang, Liu, Zheng, Huang, & Wan, 2009), graphene/mesoporous TiO 2 composite-coated electrode (Gan, Sun, Meng, Song, & Zhang, 2013), graphene layer-wrapped phosphotungstic acid (PTA) hybrid modified GCE (Gan et al, 2012), and b-cyclodex trin/poly(diallyldimethylammonium chloride)/graphene composite modified GCE (Ye, Du, Lu, & Wang, 2013).…”

Highly-sensitive electrochemical sensing platforms for food colourants based on the property-tuning of porous carbon

“…Based on the signal enhancement of multi-walled carbon nanotubes (MWCNT)-modified glassy carbon electrode (GCE), sensitive electrochemical methods were also developed for the determination of Ponceau 4R and Allura Red [11]. Using graphenephosphotungstic acid hybrid (GN-PTA) film-modified GCE, Sunset yellow and Tartrazine were successfully detected [12]. In addition, a modified GCE by ionic liquid, graphene oxides and MWCNT (IL-GO-MWCNT/GCE) were also developed for the simultaneous determination of Ponceau 4R, Allura Red and Tartrazine [13].…”

A Novel Electrochemical Sensor Based on Poly (Diallyldimethylammonium Chloride)-Dispersed Graphene Supported Palladium Nanoparticles for Simultaneous Determination of Sunset Yellow and Tartrazine in Soft Drinks

“…In China, sunset yellow and tartrazine are allowed to be added at a maximum limit of 0.1 g/kg in soft drinks (GB2760-2011), either individually or in combination. Until now, a variety of analytical methods have been developed for the determination of sunset yellow and tartrazine such as high-performance liquid chromatography-mass spectrometry (HPLC-MS) (Li et al 2015;Lorenzo et al 2015), fluorescence spectrometry (Pan et al 2011), spectrophotometry (Dinç et al 2002;Sahraei et al 2013), and electrochemical methods (Gan et al 2012;Ghoreishi et al 2012;Qiu et al 2016;Songyang et al 2015;Wang and Zhao 2015;Ye et al 2013). Among these, electrochemical methods have attracted increasing attention in determination of these two dyes on account of their excellent properties of high sensitivity, low cost, simple operation, fast response, and small size, which make it feasible for instrumental miniaturization for on-site detection.…”