Selective speciation of inorganic antimony on tetraethylenepentamine bonded silica gel column and its determination by graphite furnace atomic absorption spectrometry

► Solid phase extraction based on tetraethylenepentamine bonded silica gel is proposed. ► Speciation of trace inorganic Sb (III) and Sb (V) is feasible. ► Antimony was determined in environmental samples by GF-AAS. ► Proposed procedure is selective, simple, low cost, accurate and precise.