▎ 摘　　要

NOVELTY - Detecting heavy metal ions in brackish water based on voltammetry comprises (1) preparing glassy carbon electrode, dispersing graphene oxide uniformly in aqueous solution containing chitosan, dropping graphene oxide aqueous solution on surface of glassy carbon electrode, reducing graphene oxide to obtain glassy carbon electrode with modified surface with reduced oxidized graphene, using glassy carbon electrode with modified surface with reduced graphene oxide as cathode in iron salt solution, where iron salt is ferrous chloride and solution includes manganese chloride and sodium lauryl sulfate, and finishing modification of glassy carbon electrode; and (2) adopting electrochemical detection three-electrode system, performing electrochemical analysis using dissolution voltammetry, where platinum wire is used as counter electrode, silver/silver chloride as reference electrode, and detecting heavy metal mercury, zinc, cadmium, copper, lead, chromium ion in brackish water at the same time. USE - Method for detecting heavy metal ions in brackish water based on voltammetry. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating the method for processing artificial smart big data for controlling bank risk department (Drawing includes non-English language text). Preparing glassy carbon electrode (S1) Performing electrochemical analysis using dissolution voltammetry (S2)