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Carbamate-embedded triacontyl-modified silica(Sil-CBM-C30) was successfully prepared and used as a new kind of efficient sorbent for solid-phase extraction.The extraction performance of the resultant sorbent was evaluated with five flavonoids including myricetin,quercetin,luteolin,kaempferol and isorhamnetin.Main parameters affecting extraction efficiency were carefully investigated and optimized.