Enhanced electrochemiluminescence of CdTe quantum dots with carbon nanotube film and its sensing of methimazole

Flow injection analysis of thiamazole based on strong Ru(bpy)32+ co‐reactant electrochemiluminescence

“…The limit of detection (LOD) for thiamazole determined at a signal-to-noise ratio of 3 was~5.7 μg/kg for all three samples, which is lower than the LOD for many previously reported methods, such as FI-spectrophotometry (~340 μg/kg) (4), FI-CL (~1 mg/kg) (5), GC-MS (< 100 μg/kg) (12) and electrochemical methods (~58 μg/kg) (15), and almost matched the HPLC method (~3.5 μg/kg) (8). However, the LOD was higher than that obtained with resonance light-scattering spectroscopy (~0.2 μg/kg) (6) and CdTe QDs ECL (~0.1 μg/kg) (19). From these results, the FI-ECL method was deemed applicable for the determination of thiamazole in animal feed samples.…”

“…The advantages of ECL are its high sensitivity, good reproducibility and that it can be controlled easily (18). Hua and co-workers have developed a method for the determination of thiamazole based on its quenching effect on the ECL intensity of CdTe quantum dots (QDs) (19). However, this ECL method involves the use of CdTe QDs, which is a threat to human health and the environment.…”

Aqueous phase synthesis of CdTe quantum dots for biophotonics

“…The detection limit for cobalt ions was reported to be in the range of nmol/L. Hua et al demonstrated a novel analytical method based on electrochemiluminescence of CdTe QDs using carbon nanotube modified glass carbon electrode [93]. They have found that the carbon nanotube film on the glass carbon electrode greatly enhanced the electrochemiluminescence intensity of CdTe QDs.…”

An impedimetric aptasensor based on water soluble cadmium telluride (CdTe) quantum dots (QDs) for detection of ibuprofen

“…Some QDs such as CdS and CdSe/ZnS have been used to develop aptasensors to convert the target recognitions into electrochemical signals by an electrochemical assay [19,32,33]. CdTe QD has received increasing attention because of several advantages such as optical, magnetic and electrical properties and been used in solar photovoltaic cells, sensors, optoelectronic devices and modified electrode [34][35][36][37][38].…”