An inexpensive process has been developed to remove arsenic from flue gas using NaClO solution. The various influencing factors, such as NaClO concentration, initial solution pH, reaction temperature, concentrations of O-2, CO2, SO2 and NO in flue gas on the removal of arsenic were investigated experimentally at a self-made bubbling reactor, from which, the optimal experimental conditions were obtained with 1.0 L/min of flue gas flow rate, 100 mmol/L of NaClO solution, 6.0 of the solution pH and 60 degrees C of reaction temperature. And the average removal efficiency was achieved at about 97.5%. HPLC-HG-AFS analyses of products proved that the main reaction product was AsO43-. Combined with the analysis of the electrode potentials, the mechanism of As2O3 reaction with NaClO solution was proposed. (C) 2016 Elsevier B.V. All rights reserved.