Rapid detection of quinoline yellow in soft drinks using polypyrrole/single-walled carbon nanotubes composites modified glass carbon electrode

Sensitive determination of quinoline yellow using poly (diallyldimethylammonium chloride) functionalized reduced graphene oxide modified grassy carbon electrode

“…A linear relationship is obtained between the peak currents and the scan rates (Inset of Figure 2B), suggesting the electrode surface reaction is controlled by adsorption. This is in agreement with reported work of others (Gao, Wang, Yang, Sun, & Zhao, 2014;Jing Zhang, Wang, Shentu, Wang, He, & Chen, 2012;S. Zhang, Shi, & Wang, 2015).…”

“…It is found that the peak current of QY increases rapidly with the accumulation time from 0.5 to 2.5 min and remains a similar performance if a longer accumulation time is applied. Therefore, the accumulation time was selected as 2.5 min, which is consistent with reported work of others (Gao, Wang, Yang, Sun, & Zhao, 2014;S. Zhang, Shi, & Wang, 2015).…”

“…The successive measurements using one PDDA-RGO/GCE showed a clear decreasing in current response due to the strong surface sorption and fouling. In order to reuse the sensor, a regeneration process was adopted from literature with some modifications (Gao, Wang, Yang, Sun, & Zhao, 2014).…”

“…In order to avoid these problems, electrochemical methods have attracted more attentions due to its sensitivity, accuracy, lower cost and simplicity (Choi, 2014;Gao, Wang, Yang, Sun, & Zhao, 2014;Ghorbani, Hosseinzadeh, Pashaei, & Hosseinzadeh, 2014;Ismail & Mohamed, 2014;Piech, Rumin, & Paczosa-Bator, 2014;Rouhani & Haji-ghasemi, 2009;Sabela, Kanchi, Ayyappa, & Bisetty, 2014;Sakac, Regusic, Sak-Bosnar, Jozanovic, & Breslauer, 2014;S. Zhang, Shi, & Wang, 2015).…”

“…µM with a detection limit of 0.08 µM (Gao, Wang, Yang, Sun, & Zhao, 2014). Obviously, the fabrication of novel electrode modified materials with quick response, excellent conductivity, good sensitivity and high stability remains a challenge.…”