Ultrasensitive QDs based electrochemiluminescent immunosensor for detecting ractopamine using AuNPs and Au nanoparticles@PDDA-graphene as amplifier Original Research Article Sensors and Actuators B: Chemical, Available online 25 November 2016, Pages Qing Zhu, Huixia Liu, Jing Zhang, Kang Wu, Anping Deng, Jianguo Li
Graphical abstract
An ultrasensitive competition-type electrochemiluminescent immunoassay for the ractopamine (RAC) is put forward. Dual-signal amplified strategy was proposed by using CdSe QDs/PDDA-GN/AuNPs-labeled antibody composite as probe and AuNPs-labeled coating antigen as substrates led to high sensitivity and wider detection range. It has been used in the detection of real samples with satisfactory results, indicating a promising method for tracing RAC and other small molecular compounds. | |
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