Meanwhile,polymer materials including polymer coated materials as SPE have gained increasing attention in species enrichment recently,with the advantages of easy to synthesis and delicate post-modification for specific interaction as well as their excellent tolerances to matrix ,pH range from acidic to alkaline and sample which enable reliable speciation. For example, polypyrrole(PPY) and octadecyl were coated on capillary and silica mini-column respectively,were also used to examine their extraction efficiencies to the organoarsenic compounds.