A ratiometric electrochemical sensor for detecting lead in fish based on the synergy of semi-complementary aptamer pairs and Ag nanowires@zeolitic imidazolate framework-8
Kuiguo Han, Liang Chen, Wen Zhang, Yanqun Tong, Jiyong Shi, Xiaoyu Su, Xiaobo Zou
Abstract
This sensor uses I Fc as the conformation change signals and I MB as the internal reference signal. AgNWs@ZIF-8 is used to generate an internal reference signal. The sensor shows a range of 20 nM to 9 μM with a detection limit of 10 nM (S/N = 3).
Topics & Concepts
AptamerImidazolateElectrodeElectrochemistryMethylene blueChemistryMoleculeZeolitic imidazolate frameworkNanocompositeLinear rangeNanowireFerroceneIonCombinatorial chemistryMaterials scienceNanotechnologyDetection limitInorganic chemistryAdsorptionChromatographyPhysical chemistryOrganic chemistryGeneticsCatalysisBiologyPhotocatalysisMetal-organic frameworkElectrochemical Analysis and ApplicationsAdvanced biosensing and bioanalysis techniquesAnalytical Chemistry and Sensors