Method for testing nitrite by adopting electrochemistry

• Main Authors: REN RUI, CHEN GUOZHEN, DANG LU, HUANG-FU HUIJUN
• Format: Patent
• Language: Chinese; English
• Published: 22.06.2021
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention provides a method for detecting nitrite by adopting electrochemistry. The method comprises the following steps of: S1, preparing a graphene oxide-polyaniline-gold nanoparticle nanocomposite solution; S2, preparing a nitrite sensor by adopting the graphene oxide-polyaniline-gold nanoparticle nanocomposite solution; S3, adopting a glassy carbon electrode modified by the graphene oxide-polyaniline-gold nanoparticle nanocomposite as a working electrode of the nitrite sensor, adopting a phosphate buffer solution as a supporting electrolyte for electrochemical detection, detecting peak current values of different concentrations, and fitting a standard curve with the concentration of a nitrite standard solution adopted as the abscissa and the peak current values used as the coordinate; and S4, detecting the nitrite in a solution to be detected according to the standard curve. The method for testing nitrite by adopting electrochemistry has the advantages of good selectivity, high sensitivity, low detect