Ultrasensitive aptamer-based biosensor for acetamiprid using tetrahedral DNA nanostructures

Self-Assembled MoS2/ssDNA Nanostructures for the Capacitive Aptasensing of Acetamiprid Insecticide

“…These studies showed the use of conventional electrochemical techniques such as CV, DPV, and EIS while in this work ECS was used for the first time to achieve sensitive detection of acetamiprid and lead to obtain signal on detection. In terms of LOD the developed analytical device showed the lowest value of 14 fM where the other biosensors are in pM range [15,16,42,43]. The biosensors achieving LOD in the femtomolar range are formed with various nanomaterials including metallic nanoparticles [17,44] which can have negative impact for environment.…”

Application of Molecularly Imprinted Electrochemical Sensor for Selective Non-Labelled Detection of Acetamiprid Insecticide in Fruits

“…Student's t and F-tests were utilized for carrying out the statistical analysis of data to evaluate the difference in the mean of the analysis results and the standard reference methods as (HPLC method with 3 tested samples of ACP pure solution, EIS method with 2 tested samples of spiked apple solution, and DPASV method with 3 tested samples of spiked tomato solution) [ 22,40,42] for the obtained data for detecting the pure ACP and spiked vegetable samples (apple and tomato) respectively, as shown in Table IV, the tabulated values were higher than the calculated results, which reflects the high accuracy of the proposed sensor and its reliability and precision in comparison with the reference method.…”

“…Despite the variety of reported electrochemical methods for ACP detection as indicated in Table I, yet, some of these sensors involved the use of aptamers or precious metals as gold which are of high cost. 3,[35][36][37][38][39][40][41] None of these electrochemical sensors involved the use of carbon nano-material, or carbon paste, or molecularly imprinted polymers (MIPs, to be applied in the current work.…”

A novel label-free electrochemiluminescence aptasensor using a tetrahedral DNA nanostructure as a scaffold for ultrasensitive detection of organophosphorus pesticides in a luminol–H2O2 system

“…AuNPs can not only be used as carriers to increase the ECL material loading, but can also be modified on the electrodes to promote electron transfer and increase the specific surface area of the electrodes, thus effectively improving the strength of ECL. 25 Guo's group had fixed the Au-tetrahedral aptamer nanostructure on the working electrodes to enhance the function of the aptamers and improved the sensing performance. 12 Related studies, in recent years, have proved that AgNPs can stimulate the transfer of electrons from the reaction center to the electrode surface owing to the stronger electron transfer activity.…”