Ratiometric colorimetric detection of nitrite using CoMnO<sub>3</sub> nanofibers as an oxidase-like enzyme to induce diazotization reaction
Zoujun Peng, Ziwen Liao, Sipei Liu, Tao Lian, Peng Xu, Ping Qiu
Abstract
exhibited a positive linear relationship with the concentration of nitrite within the concentration range of 0.2-200 μM, with a detection limit of 0.094 μM. Simultaneously, this method was also successful in quantifying the nitrite produced by brined and pickled foods and the dynamic tracking of the nitrite levels in various types of dishes. The analysis method not only offers dual-signal ratio sensing with high sensitivity but also holds the benefit of outstanding selectivity for the use of the particular reaction, which has a wide range of application prospects in food safety management.
Topics & Concepts
SchematicNitriteNanofiberFabricationChemistryOxidase testEnzymeCombinatorial chemistryChromatographyNanotechnologyMaterials scienceBiochemistryOrganic chemistryEngineeringElectrical engineeringNitrateMedicinePathologyAlternative medicineAdvanced Nanomaterials in CatalysisElectrochemical sensors and biosensorsAdvanced biosensing and bioanalysis techniques