▎ 摘　　要

NOVELTY - Electrochemical method for detecting arsenic ions in solution, involves using a solution to be tested, where the solution is provided with 0.005-0.05 mol/l buffer substance, and the pH of the solution to-be-tested is equal to 1-2.8, using a graphene screen printing electrode and an electrochemical working station to detect arsenic ion in the solution in which the solution are tested by anode dissolution voltammetry. USE - The electrochemical method useful for detecting arsenic ion in solution and standard adding method (claimed), and e.g. food, water, kidney, liver, nervous system, circulatory system, respiratory system, urinary system and digestive system. ADVANTAGE - The method has high sensitivity, short enrichment time, even no need to set enrichment time and high detection efficiency, method is sensitive to the response of arsenic, the enrichment can be finished in a very short time even no enrichment time is needed, the detection limit is low, the lowest detection limit (DL) is 0.28 g/l, each voltammogram can be obtained in less than 2-3 minutes without the stage of enrichment.