▎ 摘　　要

NOVELTY - Preparation of iron-graphene oxide/chitosan composite microspheres, involves ultrasonically stir-mixing 1.5% (v/v) acetic acid aqueous solution and graphene oxide, adding chitosan, stir-mixing to obtain a graphene oxide/chitosan mixed solution, leaving still and curing, dripping the cured mixed solution in an alkaline aqueous solution using an injector, while stirring, leaving still and curing to obtain microspheres, filtering, washing until the pH of wash solution is neutral, adding 5 wt.% methanol solution of glutaraldehyde, stirring, filtering, washing, drying to obtain graphene oxide/chitosan microspheres, adding the microspheres to ferrous chloride aqueous solution, heating and evaporating, washing with deionized water until the conductivity of wash water is less than 30 mu S/cm and does not change, and drying. USE - Preparation of iron-graphene oxide/chitosan composite microspheres for use as adsorbent (claimed) for removing trivalent arsenic in water.